diff --git a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Destroy.s b/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Destroy.s
deleted file mode 100644
index 2201d2e723..0000000000
--- a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Destroy.s
+++ /dev/null
@@ -1,19 +0,0 @@
-glabel BgSpot09Obj_Destroy
-/* 0035C 808B1E3C 27BDFFE8 */  addiu   $sp, $sp, 0xFFE8           ## $sp = FFFFFFE8
-/* 00360 808B1E40 AFBF0014 */  sw      $ra, 0x0014($sp)           
-/* 00364 808B1E44 AFA40018 */  sw      $a0, 0x0018($sp)           
-/* 00368 808B1E48 848F001C */  lh      $t7, 0x001C($a0)           ## 0000001C
-/* 0036C 808B1E4C 00807025 */  or      $t6, $a0, $zero            ## $t6 = 00000000
-/* 00370 808B1E50 00A02025 */  or      $a0, $a1, $zero            ## $a0 = 00000000
-/* 00374 808B1E54 11E00003 */  beq     $t7, $zero, .L808B1E64     
-/* 00378 808B1E58 24A50810 */  addiu   $a1, $a1, 0x0810           ## $a1 = 00000810
-/* 0037C 808B1E5C 0C00FB56 */  jal     DynaPolyInfo_Free
-              ## DynaPolyInfo_delReserve
-/* 00380 808B1E60 8DC6014C */  lw      $a2, 0x014C($t6)           ## 0000014C
-.L808B1E64:
-/* 00384 808B1E64 8FBF0014 */  lw      $ra, 0x0014($sp)           
-/* 00388 808B1E68 27BD0018 */  addiu   $sp, $sp, 0x0018           ## $sp = 00000000
-/* 0038C 808B1E6C 03E00008 */  jr      $ra                        
-/* 00390 808B1E70 00000000 */  nop
-
-
diff --git a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Draw.s b/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Draw.s
deleted file mode 100644
index f87970d293..0000000000
--- a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Draw.s
+++ /dev/null
@@ -1,64 +0,0 @@
-glabel BgSpot09Obj_Draw
-/* 003A0 808B1E80 27BDFFC0 */  addiu   $sp, $sp, 0xFFC0           ## $sp = FFFFFFC0
-/* 003A4 808B1E84 AFB00014 */  sw      $s0, 0x0014($sp)           
-/* 003A8 808B1E88 00808025 */  or      $s0, $a0, $zero            ## $s0 = 00000000
-/* 003AC 808B1E8C AFBF001C */  sw      $ra, 0x001C($sp)           
-/* 003B0 808B1E90 AFB10018 */  sw      $s1, 0x0018($sp)           
-/* 003B4 808B1E94 860E001C */  lh      $t6, 0x001C($s0)           ## 0000001C
-/* 003B8 808B1E98 00A08825 */  or      $s1, $a1, $zero            ## $s1 = 00000000
-/* 003BC 808B1E9C 00A02025 */  or      $a0, $a1, $zero            ## $a0 = 00000000
-/* 003C0 808B1EA0 3C05808B */  lui     $a1, %hi(D_808B1FC8)       ## $a1 = 808B0000
-/* 003C4 808B1EA4 000E7880 */  sll     $t7, $t6,  2               
-/* 003C8 808B1EA8 00AF2821 */  addu    $a1, $a1, $t7              
-/* 003CC 808B1EAC 0C00D498 */  jal     Draw_DListOpa
-              
-/* 003D0 808B1EB0 8CA51FC8 */  lw      $a1, %lo(D_808B1FC8)($a1)  
-/* 003D4 808B1EB4 8618001C */  lh      $t8, 0x001C($s0)           ## 0000001C
-/* 003D8 808B1EB8 24010003 */  addiu   $at, $zero, 0x0003         ## $at = 00000003
-/* 003DC 808B1EBC 27A4002C */  addiu   $a0, $sp, 0x002C           ## $a0 = FFFFFFEC
-/* 003E0 808B1EC0 17010024 */  bne     $t8, $at, .L808B1F54       
-/* 003E4 808B1EC4 3C06808B */  lui     $a2, %hi(D_808B207C)       ## $a2 = 808B0000
-/* 003E8 808B1EC8 8E250000 */  lw      $a1, 0x0000($s1)           ## 00000000
-/* 003EC 808B1ECC 24C6207C */  addiu   $a2, $a2, %lo(D_808B207C)  ## $a2 = 808B207C
-/* 003F0 808B1ED0 24070184 */  addiu   $a3, $zero, 0x0184         ## $a3 = 00000184
-/* 003F4 808B1ED4 0C031AB1 */  jal     func_800C6AC4              
-/* 003F8 808B1ED8 00A08025 */  or      $s0, $a1, $zero            ## $s0 = 00000000
-/* 003FC 808B1EDC 0C024F61 */  jal     func_80093D84              
-/* 00400 808B1EE0 8E240000 */  lw      $a0, 0x0000($s1)           ## 00000000
-/* 00404 808B1EE4 8E0202D0 */  lw      $v0, 0x02D0($s0)           ## 000002D0
-/* 00408 808B1EE8 3C08DA38 */  lui     $t0, 0xDA38                ## $t0 = DA380000
-/* 0040C 808B1EEC 35080003 */  ori     $t0, $t0, 0x0003           ## $t0 = DA380003
-/* 00410 808B1EF0 24590008 */  addiu   $t9, $v0, 0x0008           ## $t9 = 00000008
-/* 00414 808B1EF4 AE1902D0 */  sw      $t9, 0x02D0($s0)           ## 000002D0
-/* 00418 808B1EF8 AC480000 */  sw      $t0, 0x0000($v0)           ## 00000000
-/* 0041C 808B1EFC 8E240000 */  lw      $a0, 0x0000($s1)           ## 00000000
-/* 00420 808B1F00 3C05808B */  lui     $a1, %hi(D_808B2094)       ## $a1 = 808B0000
-/* 00424 808B1F04 24A52094 */  addiu   $a1, $a1, %lo(D_808B2094)  ## $a1 = 808B2094
-/* 00428 808B1F08 24060187 */  addiu   $a2, $zero, 0x0187         ## $a2 = 00000187
-/* 0042C 808B1F0C 0C0346A2 */  jal     Matrix_NewMtx              
-/* 00430 808B1F10 AFA20028 */  sw      $v0, 0x0028($sp)           
-/* 00434 808B1F14 8FA30028 */  lw      $v1, 0x0028($sp)           
-/* 00438 808B1F18 3C0B0601 */  lui     $t3, 0x0601                ## $t3 = 06010000
-/* 0043C 808B1F1C 256B8010 */  addiu   $t3, $t3, 0x8010           ## $t3 = 06008010
-/* 00440 808B1F20 AC620004 */  sw      $v0, 0x0004($v1)           ## 00000004
-/* 00444 808B1F24 8E0202D0 */  lw      $v0, 0x02D0($s0)           ## 000002D0
-/* 00448 808B1F28 3C0ADE00 */  lui     $t2, 0xDE00                ## $t2 = DE000000
-/* 0044C 808B1F2C 3C06808B */  lui     $a2, %hi(D_808B20AC)       ## $a2 = 808B0000
-/* 00450 808B1F30 24490008 */  addiu   $t1, $v0, 0x0008           ## $t1 = 00000008
-/* 00454 808B1F34 AE0902D0 */  sw      $t1, 0x02D0($s0)           ## 000002D0
-/* 00458 808B1F38 AC4B0004 */  sw      $t3, 0x0004($v0)           ## 00000004
-/* 0045C 808B1F3C AC4A0000 */  sw      $t2, 0x0000($v0)           ## 00000000
-/* 00460 808B1F40 8E250000 */  lw      $a1, 0x0000($s1)           ## 00000000
-/* 00464 808B1F44 24C620AC */  addiu   $a2, $a2, %lo(D_808B20AC)  ## $a2 = 808B20AC
-/* 00468 808B1F48 27A4002C */  addiu   $a0, $sp, 0x002C           ## $a0 = FFFFFFEC
-/* 0046C 808B1F4C 0C031AD5 */  jal     func_800C6B54              
-/* 00470 808B1F50 2407018C */  addiu   $a3, $zero, 0x018C         ## $a3 = 0000018C
-.L808B1F54:
-/* 00474 808B1F54 8FBF001C */  lw      $ra, 0x001C($sp)           
-/* 00478 808B1F58 8FB00014 */  lw      $s0, 0x0014($sp)           
-/* 0047C 808B1F5C 8FB10018 */  lw      $s1, 0x0018($sp)           
-/* 00480 808B1F60 03E00008 */  jr      $ra                        
-/* 00484 808B1F64 27BD0040 */  addiu   $sp, $sp, 0x0040           ## $sp = 00000000
-/* 00488 808B1F68 00000000 */  nop
-/* 0048C 808B1F6C 00000000 */  nop
-
diff --git a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Init.s b/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Init.s
deleted file mode 100644
index cef88b2b9d..0000000000
--- a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Init.s
+++ /dev/null
@@ -1,57 +0,0 @@
-glabel BgSpot09Obj_Init
-/* 002A4 808B1D84 27BDFFE0 */  addiu   $sp, $sp, 0xFFE0           ## $sp = FFFFFFE0
-/* 002A8 808B1D88 AFB00018 */  sw      $s0, 0x0018($sp)           
-/* 002AC 808B1D8C 3C068016 */  lui     $a2, 0x8016                ## $a2 = 80160000
-/* 002B0 808B1D90 94C6F546 */  lhu     $a2, -0x0ABA($a2)          ## 8015F546
-/* 002B4 808B1D94 00808025 */  or      $s0, $a0, $zero            ## $s0 = 00000000
-/* 002B8 808B1D98 AFBF001C */  sw      $ra, 0x001C($sp)           
-/* 002BC 808B1D9C AFA50024 */  sw      $a1, 0x0024($sp)           
-/* 002C0 808B1DA0 3C04808B */  lui     $a0, %hi(D_808B1FE0)       ## $a0 = 808B0000
-/* 002C4 808B1DA4 24841FE0 */  addiu   $a0, $a0, %lo(D_808B1FE0)  ## $a0 = 808B1FE0
-/* 002C8 808B1DA8 8605001C */  lh      $a1, 0x001C($s0)           ## 0000001C
-/* 002CC 808B1DAC 0C00084C */  jal     osSyncPrintf
-              
-/* 002D0 808B1DB0 30C6000F */  andi    $a2, $a2, 0x000F           ## $a2 = 00000000
-/* 002D4 808B1DB4 860E001C */  lh      $t6, 0x001C($s0)           ## 0000001C
-/* 002D8 808B1DB8 3C04808B */  lui     $a0, %hi(D_808B2018)       ## $a0 = 808B0000
-/* 002DC 808B1DBC 3C05808B */  lui     $a1, %hi(D_808B2064)       ## $a1 = 808B0000
-/* 002E0 808B1DC0 31CF00FF */  andi    $t7, $t6, 0x00FF           ## $t7 = 00000000
-/* 002E4 808B1DC4 A60F001C */  sh      $t7, 0x001C($s0)           ## 0000001C
-/* 002E8 808B1DC8 8607001C */  lh      $a3, 0x001C($s0)           ## 0000001C
-/* 002EC 808B1DCC 24A52064 */  addiu   $a1, $a1, %lo(D_808B2064)  ## $a1 = 808B2064
-/* 002F0 808B1DD0 24842018 */  addiu   $a0, $a0, %lo(D_808B2018)  ## $a0 = 808B2018
-/* 002F4 808B1DD4 04E00003 */  bltz    $a3, .L808B1DE4            
-/* 002F8 808B1DD8 28E10005 */  slti    $at, $a3, 0x0005           
-/* 002FC 808B1DDC 54200004 */  bnel    $at, $zero, .L808B1DF0     
-/* 00300 808B1DE0 02002025 */  or      $a0, $s0, $zero            ## $a0 = 00000000
-.L808B1DE4:
-/* 00304 808B1DE4 0C00084C */  jal     osSyncPrintf
-              
-/* 00308 808B1DE8 24060142 */  addiu   $a2, $zero, 0x0142         ## $a2 = 00000142
-/* 0030C 808B1DEC 02002025 */  or      $a0, $s0, $zero            ## $a0 = 00000000
-.L808B1DF0:
-/* 00310 808B1DF0 0C22C71C */  jal     func_808B1C70              
-/* 00314 808B1DF4 8FA50024 */  lw      $a1, 0x0024($sp)           
-/* 00318 808B1DF8 14400005 */  bne     $v0, $zero, .L808B1E10     
-/* 0031C 808B1DFC 02002025 */  or      $a0, $s0, $zero            ## $a0 = 00000000
-/* 00320 808B1E00 0C00B55C */  jal     Actor_Kill
-              
-/* 00324 808B1E04 02002025 */  or      $a0, $s0, $zero            ## $a0 = 00000000
-/* 00328 808B1E08 10000008 */  beq     $zero, $zero, .L808B1E2C   
-/* 0032C 808B1E0C 8FBF001C */  lw      $ra, 0x001C($sp)           
-.L808B1E10:
-/* 00330 808B1E10 0C22C751 */  jal     func_808B1D44              
-/* 00334 808B1E14 8FA50024 */  lw      $a1, 0x0024($sp)           
-/* 00338 808B1E18 54400004 */  bnel    $v0, $zero, .L808B1E2C     
-/* 0033C 808B1E1C 8FBF001C */  lw      $ra, 0x001C($sp)           
-/* 00340 808B1E20 0C00B55C */  jal     Actor_Kill
-              
-/* 00344 808B1E24 02002025 */  or      $a0, $s0, $zero            ## $a0 = 00000000
-/* 00348 808B1E28 8FBF001C */  lw      $ra, 0x001C($sp)           
-.L808B1E2C:
-/* 0034C 808B1E2C 8FB00018 */  lw      $s0, 0x0018($sp)           
-/* 00350 808B1E30 27BD0020 */  addiu   $sp, $sp, 0x0020           ## $sp = 00000000
-/* 00354 808B1E34 03E00008 */  jr      $ra                        
-/* 00358 808B1E38 00000000 */  nop
-
-
diff --git a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Update.s b/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Update.s
deleted file mode 100644
index 04fa8a39b9..0000000000
--- a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Update.s
+++ /dev/null
@@ -1,6 +0,0 @@
-glabel BgSpot09Obj_Update
-/* 00394 808B1E74 AFA40000 */  sw      $a0, 0x0000($sp)           
-/* 00398 808B1E78 03E00008 */  jr      $ra                        
-/* 0039C 808B1E7C AFA50004 */  sw      $a1, 0x0004($sp)           
-
-
diff --git a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1AE0.s b/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1AE0.s
deleted file mode 100644
index 70aba536af..0000000000
--- a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1AE0.s
+++ /dev/null
@@ -1,62 +0,0 @@
-glabel func_808B1AE0
-/* 00000 808B1AE0 3C028016 */  lui     $v0, 0x8016                ## $v0 = 80160000
-/* 00004 808B1AE4 2442E660 */  addiu   $v0, $v0, 0xE660           ## $v0 = 8015E660
-/* 00008 808B1AE8 8C4E1360 */  lw      $t6, 0x1360($v0)           ## 8015F9C0
-/* 0000C 808B1AEC AFA50004 */  sw      $a1, 0x0004($sp)           
-/* 00010 808B1AF0 29C10004 */  slti    $at, $t6, 0x0004           
-/* 00014 808B1AF4 54200005 */  bnel    $at, $zero, .L808B1B0C     
-/* 00018 808B1AF8 94430EE6 */  lhu     $v1, 0x0EE6($v0)           ## 8015F546
-/* 0001C 808B1AFC 8482001C */  lh      $v0, 0x001C($a0)           ## 0000001C
-/* 00020 808B1B00 03E00008 */  jr      $ra                        
-/* 00024 808B1B04 2C420001 */  sltiu   $v0, $v0, 0x0001           
-.L808B1B08:
-/* 00028 808B1B08 94430EE6 */  lhu     $v1, 0x0EE6($v0)           ## 8015F546
-.L808B1B0C:
-/* 0002C 808B1B0C 8C4F0004 */  lw      $t7, 0x0004($v0)           ## 8015E664
-/* 00030 808B1B10 24010011 */  addiu   $at, $zero, 0x0011         ## $at = 00000011
-/* 00034 808B1B14 3063000F */  andi    $v1, $v1, 0x000F           ## $v1 = 00000000
-/* 00038 808B1B18 3863000F */  xori    $v1, $v1, 0x000F           ## $v1 = 0000000F
-/* 0003C 808B1B1C 11E00003 */  beq     $t7, $zero, .L808B1B2C     
-/* 00040 808B1B20 2C630001 */  sltiu   $v1, $v1, 0x0001           
-/* 00044 808B1B24 10000002 */  beq     $zero, $zero, .L808B1B30   
-/* 00048 808B1B28 24020005 */  addiu   $v0, $zero, 0x0005         ## $v0 = 00000005
-.L808B1B2C:
-/* 0004C 808B1B2C 24020011 */  addiu   $v0, $zero, 0x0011         ## $v0 = 00000011
-.L808B1B30:
-/* 00050 808B1B30 54410016 */  bnel    $v0, $at, .L808B1B8C       
-/* 00054 808B1B34 8482001C */  lh      $v0, 0x001C($a0)           ## 0000001C
-/* 00058 808B1B38 8482001C */  lh      $v0, 0x001C($a0)           ## 0000001C
-/* 0005C 808B1B3C 24010001 */  addiu   $at, $zero, 0x0001         ## $at = 00000001
-/* 00060 808B1B40 10400009 */  beq     $v0, $zero, .L808B1B68     
-/* 00064 808B1B44 00000000 */  nop
-/* 00068 808B1B48 10410009 */  beq     $v0, $at, .L808B1B70       
-/* 0006C 808B1B4C 24010003 */  addiu   $at, $zero, 0x0003         ## $at = 00000003
-/* 00070 808B1B50 1041000B */  beq     $v0, $at, .L808B1B80       
-/* 00074 808B1B54 24010004 */  addiu   $at, $zero, 0x0004         ## $at = 00000004
-/* 00078 808B1B58 10410007 */  beq     $v0, $at, .L808B1B78       
-/* 0007C 808B1B5C 00000000 */  nop
-/* 00080 808B1B60 1000000D */  beq     $zero, $zero, .L808B1B98   
-/* 00084 808B1B64 00001025 */  or      $v0, $zero, $zero          ## $v0 = 00000000
-.L808B1B68:
-/* 00088 808B1B68 03E00008 */  jr      $ra                        
-/* 0008C 808B1B6C 00001025 */  or      $v0, $zero, $zero          ## $v0 = 00000000
-.L808B1B70:
-/* 00090 808B1B70 03E00008 */  jr      $ra                        
-/* 00094 808B1B74 2C620001 */  sltiu   $v0, $v1, 0x0001           
-.L808B1B78:
-/* 00098 808B1B78 03E00008 */  jr      $ra                        
-/* 0009C 808B1B7C 00601025 */  or      $v0, $v1, $zero            ## $v0 = 0000000F
-.L808B1B80:
-/* 000A0 808B1B80 03E00008 */  jr      $ra                        
-/* 000A4 808B1B84 24020001 */  addiu   $v0, $zero, 0x0001         ## $v0 = 00000001
-.L808B1B88:
-/* 000A8 808B1B88 8482001C */  lh      $v0, 0x001C($a0)           ## 0000001C
-.L808B1B8C:
-/* 000AC 808B1B8C 38420002 */  xori    $v0, $v0, 0x0002           ## $v0 = 00000003
-/* 000B0 808B1B90 03E00008 */  jr      $ra                        
-/* 000B4 808B1B94 2C420001 */  sltiu   $v0, $v0, 0x0001           
-.L808B1B98:
-/* 000B8 808B1B98 03E00008 */  jr      $ra                        
-/* 000BC 808B1B9C 00000000 */  nop
-
-
diff --git a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1BA0.s b/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1BA0.s
deleted file mode 100644
index 21df73bd41..0000000000
--- a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1BA0.s
+++ /dev/null
@@ -1,26 +0,0 @@
-glabel func_808B1BA0
-/* 000C0 808B1BA0 27BDFFE8 */  addiu   $sp, $sp, 0xFFE8           ## $sp = FFFFFFE8
-/* 000C4 808B1BA4 AFBF0014 */  sw      $ra, 0x0014($sp)           
-/* 000C8 808B1BA8 AFA5001C */  sw      $a1, 0x001C($sp)           
-/* 000CC 808B1BAC 848E001C */  lh      $t6, 0x001C($a0)           ## 0000001C
-/* 000D0 808B1BB0 24010003 */  addiu   $at, $zero, 0x0003         ## $at = 00000003
-/* 000D4 808B1BB4 3C053DCC */  lui     $a1, 0x3DCC                ## $a1 = 3DCC0000
-/* 000D8 808B1BB8 15C10005 */  bne     $t6, $at, .L808B1BD0       
-/* 000DC 808B1BBC 00000000 */  nop
-/* 000E0 808B1BC0 0C00B58B */  jal     Actor_SetScale
-              
-/* 000E4 808B1BC4 34A5CCCD */  ori     $a1, $a1, 0xCCCD           ## $a1 = 3DCCCCCD
-/* 000E8 808B1BC8 10000004 */  beq     $zero, $zero, .L808B1BDC   
-/* 000EC 808B1BCC 8FBF0014 */  lw      $ra, 0x0014($sp)           
-.L808B1BD0:
-/* 000F0 808B1BD0 0C00B58B */  jal     Actor_SetScale
-              
-/* 000F4 808B1BD4 3C053F80 */  lui     $a1, 0x3F80                ## $a1 = 3F800000
-/* 000F8 808B1BD8 8FBF0014 */  lw      $ra, 0x0014($sp)           
-.L808B1BDC:
-/* 000FC 808B1BDC 27BD0018 */  addiu   $sp, $sp, 0x0018           ## $sp = 00000000
-/* 00100 808B1BE0 24020001 */  addiu   $v0, $zero, 0x0001         ## $v0 = 00000001
-/* 00104 808B1BE4 03E00008 */  jr      $ra                        
-/* 00108 808B1BE8 00000000 */  nop
-
-
diff --git a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1BEC.s b/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1BEC.s
deleted file mode 100644
index 56294c2b08..0000000000
--- a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1BEC.s
+++ /dev/null
@@ -1,40 +0,0 @@
-glabel func_808B1BEC
-/* 0010C 808B1BEC 27BDFFD0 */  addiu   $sp, $sp, 0xFFD0           ## $sp = FFFFFFD0
-/* 00110 808B1BF0 AFBF001C */  sw      $ra, 0x001C($sp)           
-/* 00114 808B1BF4 AFB00018 */  sw      $s0, 0x0018($sp)           
-/* 00118 808B1BF8 AFA50034 */  sw      $a1, 0x0034($sp)           
-/* 0011C 808B1BFC AFA00028 */  sw      $zero, 0x0028($sp)         
-/* 00120 808B1C00 848E001C */  lh      $t6, 0x001C($a0)           ## 0000001C
-/* 00124 808B1C04 3C18808B */  lui     $t8, %hi(D_808B1F90)       ## $t8 = 808B0000
-/* 00128 808B1C08 00808025 */  or      $s0, $a0, $zero            ## $s0 = 00000000
-/* 0012C 808B1C0C 000E7880 */  sll     $t7, $t6,  2               
-/* 00130 808B1C10 030FC021 */  addu    $t8, $t8, $t7              
-/* 00134 808B1C14 8F181F90 */  lw      $t8, %lo(D_808B1F90)($t8)  
-/* 00138 808B1C18 53000011 */  beql    $t8, $zero, .L808B1C60     
-/* 0013C 808B1C1C 8FBF001C */  lw      $ra, 0x001C($sp)           
-/* 00140 808B1C20 0C010D20 */  jal     DynaPolyInfo_SetActorMove
-              
-/* 00144 808B1C24 00002825 */  or      $a1, $zero, $zero          ## $a1 = 00000000
-/* 00148 808B1C28 8619001C */  lh      $t9, 0x001C($s0)           ## 0000001C
-/* 0014C 808B1C2C 3C04808B */  lui     $a0, %hi(D_808B1F90)       ## $a0 = 808B0000
-/* 00150 808B1C30 27A50028 */  addiu   $a1, $sp, 0x0028           ## $a1 = FFFFFFF8
-/* 00154 808B1C34 00194080 */  sll     $t0, $t9,  2               
-/* 00158 808B1C38 00882021 */  addu    $a0, $a0, $t0              
-/* 0015C 808B1C3C 0C010620 */  jal     DynaPolyInfo_Alloc
-              
-/* 00160 808B1C40 8C841F90 */  lw      $a0, %lo(D_808B1F90)($a0)  
-/* 00164 808B1C44 8FA40034 */  lw      $a0, 0x0034($sp)           
-/* 00168 808B1C48 02003025 */  or      $a2, $s0, $zero            ## $a2 = 00000000
-/* 0016C 808B1C4C 8FA70028 */  lw      $a3, 0x0028($sp)           
-/* 00170 808B1C50 0C00FA9D */  jal     DynaPolyInfo_RegisterActor
-              ## DynaPolyInfo_setActor
-/* 00174 808B1C54 24850810 */  addiu   $a1, $a0, 0x0810           ## $a1 = 00000810
-/* 00178 808B1C58 AE02014C */  sw      $v0, 0x014C($s0)           ## 0000014C
-/* 0017C 808B1C5C 8FBF001C */  lw      $ra, 0x001C($sp)           
-.L808B1C60:
-/* 00180 808B1C60 8FB00018 */  lw      $s0, 0x0018($sp)           
-/* 00184 808B1C64 27BD0030 */  addiu   $sp, $sp, 0x0030           ## $sp = 00000000
-/* 00188 808B1C68 03E00008 */  jr      $ra                        
-/* 0018C 808B1C6C 24020001 */  addiu   $v0, $zero, 0x0001         ## $v0 = 00000001
-
-
diff --git a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1C70.s b/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1C70.s
deleted file mode 100644
index 9606370b3d..0000000000
--- a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1C70.s
+++ /dev/null
@@ -1,37 +0,0 @@
-glabel func_808B1C70
-/* 00190 808B1C70 27BDFFD8 */  addiu   $sp, $sp, 0xFFD8           ## $sp = FFFFFFD8
-/* 00194 808B1C74 AFB30020 */  sw      $s3, 0x0020($sp)           
-/* 00198 808B1C78 AFB00014 */  sw      $s0, 0x0014($sp)           
-/* 0019C 808B1C7C AFB2001C */  sw      $s2, 0x001C($sp)           
-/* 001A0 808B1C80 AFB10018 */  sw      $s1, 0x0018($sp)           
-/* 001A4 808B1C84 3C10808B */  lui     $s0, %hi(D_808B1FA4)       ## $s0 = 808B0000
-/* 001A8 808B1C88 3C13808B */  lui     $s3, %hi(D_808B1FB0)       ## $s3 = 808B0000
-/* 001AC 808B1C8C 00808825 */  or      $s1, $a0, $zero            ## $s1 = 00000000
-/* 001B0 808B1C90 00A09025 */  or      $s2, $a1, $zero            ## $s2 = 00000000
-/* 001B4 808B1C94 AFBF0024 */  sw      $ra, 0x0024($sp)           
-/* 001B8 808B1C98 26731FB0 */  addiu   $s3, $s3, %lo(D_808B1FB0)  ## $s3 = 808B1FB0
-/* 001BC 808B1C9C 26101FA4 */  addiu   $s0, $s0, %lo(D_808B1FA4)  ## $s0 = 808B1FA4
-/* 001C0 808B1CA0 8E190000 */  lw      $t9, 0x0000($s0)           ## 808B1FA4
-.L808B1CA4:
-/* 001C4 808B1CA4 02202025 */  or      $a0, $s1, $zero            ## $a0 = 00000000
-/* 001C8 808B1CA8 02402825 */  or      $a1, $s2, $zero            ## $a1 = 00000000
-/* 001CC 808B1CAC 0320F809 */  jalr    $ra, $t9                   
-/* 001D0 808B1CB0 00000000 */  nop
-/* 001D4 808B1CB4 14400003 */  bne     $v0, $zero, .L808B1CC4     
-/* 001D8 808B1CB8 26100004 */  addiu   $s0, $s0, 0x0004           ## $s0 = 808B1FA8
-/* 001DC 808B1CBC 10000004 */  beq     $zero, $zero, .L808B1CD0   
-/* 001E0 808B1CC0 00001025 */  or      $v0, $zero, $zero          ## $v0 = 00000000
-.L808B1CC4:
-/* 001E4 808B1CC4 5613FFF7 */  bnel    $s0, $s3, .L808B1CA4       
-/* 001E8 808B1CC8 8E190000 */  lw      $t9, 0x0000($s0)           ## 808B1FA8
-/* 001EC 808B1CCC 24020001 */  addiu   $v0, $zero, 0x0001         ## $v0 = 00000001
-.L808B1CD0:
-/* 001F0 808B1CD0 8FBF0024 */  lw      $ra, 0x0024($sp)           
-/* 001F4 808B1CD4 8FB00014 */  lw      $s0, 0x0014($sp)           
-/* 001F8 808B1CD8 8FB10018 */  lw      $s1, 0x0018($sp)           
-/* 001FC 808B1CDC 8FB2001C */  lw      $s2, 0x001C($sp)           
-/* 00200 808B1CE0 8FB30020 */  lw      $s3, 0x0020($sp)           
-/* 00204 808B1CE4 03E00008 */  jr      $ra                        
-/* 00208 808B1CE8 27BD0028 */  addiu   $sp, $sp, 0x0028           ## $sp = 00000000
-
-
diff --git a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1CEC.s b/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1CEC.s
deleted file mode 100644
index dd9f40be3f..0000000000
--- a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1CEC.s
+++ /dev/null
@@ -1,15 +0,0 @@
-glabel func_808B1CEC
-/* 0020C 808B1CEC 27BDFFE8 */  addiu   $sp, $sp, 0xFFE8           ## $sp = FFFFFFE8
-/* 00210 808B1CF0 AFA5001C */  sw      $a1, 0x001C($sp)           
-/* 00214 808B1CF4 AFBF0014 */  sw      $ra, 0x0014($sp)           
-/* 00218 808B1CF8 3C05808B */  lui     $a1, %hi(D_808B1FB0)       ## $a1 = 808B0000
-/* 0021C 808B1CFC 0C01E037 */  jal     Actor_ProcessInitChain
-              
-/* 00220 808B1D00 24A51FB0 */  addiu   $a1, $a1, %lo(D_808B1FB0)  ## $a1 = 808B1FB0
-/* 00224 808B1D04 8FBF0014 */  lw      $ra, 0x0014($sp)           
-/* 00228 808B1D08 27BD0018 */  addiu   $sp, $sp, 0x0018           ## $sp = 00000000
-/* 0022C 808B1D0C 24020001 */  addiu   $v0, $zero, 0x0001         ## $v0 = 00000001
-/* 00230 808B1D10 03E00008 */  jr      $ra                        
-/* 00234 808B1D14 00000000 */  nop
-
-
diff --git a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1D18.s b/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1D18.s
deleted file mode 100644
index 379052251e..0000000000
--- a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1D18.s
+++ /dev/null
@@ -1,15 +0,0 @@
-glabel func_808B1D18
-/* 00238 808B1D18 27BDFFE8 */  addiu   $sp, $sp, 0xFFE8           ## $sp = FFFFFFE8
-/* 0023C 808B1D1C AFA5001C */  sw      $a1, 0x001C($sp)           
-/* 00240 808B1D20 AFBF0014 */  sw      $ra, 0x0014($sp)           
-/* 00244 808B1D24 3C05808B */  lui     $a1, %hi(D_808B1FBC)       ## $a1 = 808B0000
-/* 00248 808B1D28 0C01E037 */  jal     Actor_ProcessInitChain
-              
-/* 0024C 808B1D2C 24A51FBC */  addiu   $a1, $a1, %lo(D_808B1FBC)  ## $a1 = 808B1FBC
-/* 00250 808B1D30 8FBF0014 */  lw      $ra, 0x0014($sp)           
-/* 00254 808B1D34 27BD0018 */  addiu   $sp, $sp, 0x0018           ## $sp = 00000000
-/* 00258 808B1D38 24020001 */  addiu   $v0, $zero, 0x0001         ## $v0 = 00000001
-/* 0025C 808B1D3C 03E00008 */  jr      $ra                        
-/* 00260 808B1D40 00000000 */  nop
-
-
diff --git a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1D44.s b/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1D44.s
deleted file mode 100644
index 702a22028d..0000000000
--- a/asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1D44.s
+++ /dev/null
@@ -1,21 +0,0 @@
-glabel func_808B1D44
-/* 00264 808B1D44 27BDFFE8 */  addiu   $sp, $sp, 0xFFE8           ## $sp = FFFFFFE8
-/* 00268 808B1D48 AFBF0014 */  sw      $ra, 0x0014($sp)           
-/* 0026C 808B1D4C 848E001C */  lh      $t6, 0x001C($a0)           ## 0000001C
-/* 00270 808B1D50 24010003 */  addiu   $at, $zero, 0x0003         ## $at = 00000003
-/* 00274 808B1D54 15C10005 */  bne     $t6, $at, .L808B1D6C       
-/* 00278 808B1D58 00000000 */  nop
-/* 0027C 808B1D5C 0C22C746 */  jal     func_808B1D18              
-/* 00280 808B1D60 00000000 */  nop
-/* 00284 808B1D64 10000004 */  beq     $zero, $zero, .L808B1D78   
-/* 00288 808B1D68 8FBF0014 */  lw      $ra, 0x0014($sp)           
-.L808B1D6C:
-/* 0028C 808B1D6C 0C22C73B */  jal     func_808B1CEC              
-/* 00290 808B1D70 00000000 */  nop
-/* 00294 808B1D74 8FBF0014 */  lw      $ra, 0x0014($sp)           
-.L808B1D78:
-/* 00298 808B1D78 27BD0018 */  addiu   $sp, $sp, 0x0018           ## $sp = 00000000
-/* 0029C 808B1D7C 03E00008 */  jr      $ra                        
-/* 002A0 808B1D80 00000000 */  nop
-
-
diff --git a/data/overlays/actors/z_bg_spot09_obj.data.s b/data/overlays/actors/z_bg_spot09_obj.data.s
deleted file mode 100644
index d139abbb9e..0000000000
--- a/data/overlays/actors/z_bg_spot09_obj.data.s
+++ /dev/null
@@ -1,28 +0,0 @@
-.include "macro.inc"
-
- # assembler directives
- .set noat      # allow manual use of $at
- .set noreorder # don't insert nops after branches
- .set gp=64     # allow use of 64-bit general purposee registers
-
-.section .data
-
-glabel Bg_Spot09_Obj_InitVars
- .word 0x00B80100, 0x00000000, 0x00AE0000, 0x00000168
-.word BgSpot09Obj_Init
-.word BgSpot09Obj_Destroy
-.word BgSpot09Obj_Update
-.word BgSpot09Obj_Draw
-glabel D_808B1F90
- .word 0x00000000, 0x06005520, 0x0600283C, 0x06008458, 0x06007580
-glabel D_808B1FA4
- .word func_808B1BEC
-.word func_808B1AE0
-.word func_808B1BA0
-glabel D_808B1FB0
- .word 0xB0F41C20, 0xB0F80BB8, 0x30FC1C20
-glabel D_808B1FBC
- .word 0xB0F41C20, 0xB0F80320, 0x30FC05DC
-glabel D_808B1FC8
- .word 0x06000100, 0x06003970, 0x06001120, 0x06007D40, 0x06006210, 0x00000000
-
diff --git a/data/overlays/actors/z_bg_spot09_obj.reloc.s b/data/overlays/actors/z_bg_spot09_obj.reloc.s
deleted file mode 100644
index bd2caa08ac..0000000000
--- a/data/overlays/actors/z_bg_spot09_obj.reloc.s
+++ /dev/null
@@ -1,11 +0,0 @@
-.include "macro.inc"
-
- # assembler directives
- .set noat      # allow manual use of $at
- .set noreorder # don't insert nops after branches
- .set gp=64     # allow use of 64-bit general purposee registers
-
-.section .rodata
-glabel D_808B20D0
-
-.incbin "baserom/ovl_Bg_Spot09_Obj", 0x5F0, 0x000000B0
diff --git a/data/overlays/actors/z_bg_spot09_obj.rodata.s b/data/overlays/actors/z_bg_spot09_obj.rodata.s
deleted file mode 100644
index 5fa755b4eb..0000000000
--- a/data/overlays/actors/z_bg_spot09_obj.rodata.s
+++ /dev/null
@@ -1,38 +0,0 @@
-.include "macro.inc"
-
- # assembler directives
- .set noat      # allow manual use of $at
- .set noreorder # don't insert nops after branches
- .set gp=64     # allow use of 64-bit general purposee registers
-
-.section .rodata
-
-glabel D_808B1FE0
-
-    .asciz "Spot09 Object [arg_data : 0x%04x](大工救出フラグ 0x%x)\n"
-    .balign 4
-
-glabel D_808B2018
-
-    .asciz "Error : Spot 09 object の arg_data が判別出来ない(%s %d)(arg_data 0x%04x)\n"
-    .balign 4
-
-glabel D_808B2064
-
-    .asciz "../z_bg_spot09_obj.c"
-    .balign 4
-
-glabel D_808B207C
-
-    .asciz "../z_bg_spot09_obj.c"
-    .balign 4
-
-glabel D_808B2094
-
-    .asciz "../z_bg_spot09_obj.c"
-    .balign 4
-
-glabel D_808B20AC
- .word 0x2E2E2F7A, 0x5F62675F, 0x73706F74, 0x30395F6F, 0x626A2E63, 0x00000000, 0x00000000, 0x00000000, 0x00000000
-
-
diff --git a/diff.py b/diff.py
index 5ba345632b..446dfb56be 100755
--- a/diff.py
+++ b/diff.py
@@ -16,14 +16,16 @@ def fail(msg):
     print(msg, file=sys.stderr)
     sys.exit(1)
 
+MISSING_PREREQUISITES = "Missing prerequisite python module {}. " \
+    "Run `python3 -m pip install --user colorama ansiwrap attrs watchdog python-Levenshtein` to install prerequisites (python-Levenshtein only needed for --algorithm=levenshtein)."
+
 try:
     import attr
     from colorama import Fore, Style, Back
     import ansiwrap
     import watchdog
 except ModuleNotFoundError as e:
-    fail(f"Missing prerequisite python module {e.name}. "
-        "Run `python3 -m pip install --user colorama ansiwrap attrs watchdog` to install prerequisites.")
+    fail(MISSING_PREREQUISITES.format(e.name))
 
 # Prefer to use diff_settings.py from the current working directory
 sys.path.insert(0, '.')
@@ -66,6 +68,8 @@ parser.add_argument('-w', '--watch', dest='watch', action='store_true',
         "Recommended in combination with -m.")
 parser.add_argument('--width', dest='column_width', type=int, default=50,
         help="Sets the width of the left and right view column.")
+parser.add_argument('--algorithm', dest='algorithm', default='difflib',
+        choices=['levenshtein', 'difflib'], help="Diff algorithm to use.")
 
 # Project-specific flags, e.g. different versions/make arguments.
 if hasattr(diff_settings, "add_custom_arguments"):
@@ -106,6 +110,12 @@ FS_WATCH_EXTENSIONS = ['.c', '.h']
 
 # ==== LOGIC ====
 
+if args.algorithm == 'levenshtein':
+    try:
+        import Levenshtein
+    except ModuleNotFoundError as e:
+        fail(MISSING_PREREQUISITES.format(e.name))
+
 binutils_prefix = None
 
 for binutils_cand in ['mips-linux-gnu-', 'mips64-elf-']:
@@ -449,6 +459,32 @@ def color_branch_imms(br1, br2):
         br2 = f'{Fore.LIGHTBLUE_EX}{br2}{Style.RESET_ALL}'
     return br1, br2
 
+def diff_sequences_difflib(seq1, seq2):
+    differ = difflib.SequenceMatcher(a=seq1, b=seq2, autojunk=False)
+    return differ.get_opcodes()
+
+def diff_sequences(seq1, seq2):
+    if (args.algorithm != 'levenshtein' or len(seq1) * len(seq2) > 4 * 10**8 or
+            len(seq1) + len(seq2) >= 0x110000):
+        return diff_sequences_difflib(seq1, seq2)
+
+    # The Levenshtein library assumes that we compare strings, not lists. Convert.
+    # (Per the check above we know we have fewer than 0x110000 unique elements, so chr() works.)
+    remapping = {}
+    def remap(seq):
+        seq = seq[:]
+        for i in range(len(seq)):
+            val = remapping.get(seq[i])
+            if val is None:
+                val = chr(len(remapping))
+                remapping[seq[i]] = val
+            seq[i] = val
+        return ''.join(seq)
+
+    seq1 = remap(seq1)
+    seq2 = remap(seq2)
+    return Levenshtein.opcodes(seq1, seq2)
+
 def do_diff(basedump, mydump):
     asm_lines1 = basedump.split('\n')
     asm_lines2 = mydump.split('\n')
@@ -477,8 +513,7 @@ def do_diff(basedump, mydump):
                     btset.add(bt + ":")
                     sc.color_symbol(bt + ":")
 
-    differ: difflib.SequenceMatcher = difflib.SequenceMatcher(a=mnemonics1, b=mnemonics2, autojunk=False)
-    for (tag, i1, i2, j1, j2) in differ.get_opcodes():
+    for (tag, i1, i2, j1, j2) in diff_sequences(mnemonics1, mnemonics2):
         lines1 = asm_lines1[i1:i2]
         lines2 = asm_lines2[j1:j2]
 
@@ -791,7 +826,7 @@ def main():
                     display.progress("Building...")
                     ret = run_make(make_target, capture_output=True)
                     if ret.returncode != 0:
-                        display.update(ret.stderr.decode() or ret.stdout.decode(), error=True)
+                        display.update(ret.stderr.decode('utf-8-sig', 'replace') or ret.stdout.decode('utf-8-sig', 'replace'), error=True)
                         continue
                 mydump = run_objdump(mycmd)
                 display.update(mydump, error=False)
diff --git a/spec b/spec
index 6f57117422..7ec58264da 100644
--- a/spec
+++ b/spec
@@ -1456,9 +1456,7 @@ endseg
 beginseg
     name "ovl_Bg_Spot09_Obj"
     include "build/src/overlays/actors/ovl_Bg_Spot09_Obj/z_bg_spot09_obj.o"
-    include "build/data/overlays/actors/z_bg_spot09_obj.data.o"
-    include "build/data/overlays/actors/z_bg_spot09_obj.rodata.o"
-    include "build/data/overlays/actors/z_bg_spot09_obj.reloc.o"
+    include "build/src/overlays/actors/ovl_Bg_Spot09_Obj/z_bg_spot09_obj_reloc.o"
 endseg
 
 beginseg
diff --git a/src/overlays/actors/ovl_Bg_Spot09_Obj/z_bg_spot09_obj.c b/src/overlays/actors/ovl_Bg_Spot09_Obj/z_bg_spot09_obj.c
index 342fd326a9..9ac414e844 100644
--- a/src/overlays/actors/ovl_Bg_Spot09_Obj/z_bg_spot09_obj.c
+++ b/src/overlays/actors/ovl_Bg_Spot09_Obj/z_bg_spot09_obj.c
@@ -1,14 +1,23 @@
+/*
+ * File: z_bg_spot09_obj.c
+ * Overlay: ovl_Bg_Spot09_Obj
+ * Description:
+ */
+
 #include "z_bg_spot09_obj.h"
 
 #define ROOM 0x00
 #define FLAGS 0x00000000
 
-void BgSpot09Obj_Init(BgSpot09Obj* this, GlobalContext* globalCtx);
-void BgSpot09Obj_Destroy(BgSpot09Obj* this, GlobalContext* globalCtx);
-void BgSpot09Obj_Update(BgSpot09Obj* this, GlobalContext* globalCtx);
-void BgSpot09Obj_Draw(BgSpot09Obj* this, GlobalContext* globalCtx);
+static void BgSpot09Obj_Init(BgSpot09Obj* this, GlobalContext* globalCtx);
+static void BgSpot09Obj_Destroy(BgSpot09Obj* this, GlobalContext* globalCtx);
+static void BgSpot09Obj_Update(BgSpot09Obj* this, GlobalContext* globalCtx);
+static void BgSpot09Obj_Draw(BgSpot09Obj* this, GlobalContext* globalCtx);
+
+static s32 func_808B1AE0(BgSpot09Obj* this, GlobalContext* globalCtx);
+static s32 func_808B1BA0(BgSpot09Obj* this, GlobalContext* globalCtx);
+static s32 func_808B1BEC(BgSpot09Obj* this, GlobalContext* globalCtx);
 
-/*
 const ActorInit Bg_Spot09_Obj_InitVars = {
     ACTOR_BG_SPOT09_OBJ,
     ACTORTYPE_BG,
@@ -21,25 +30,155 @@ const ActorInit Bg_Spot09_Obj_InitVars = {
     (ActorFunc)BgSpot09Obj_Update,
     (ActorFunc)BgSpot09Obj_Draw,
 };
-*/
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1AE0.s")
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1BA0.s")
+static u32 D_808B1F90[] = { 0x00000000, 0x06005520, 0x0600283C, 0x06008458, 0x06007580 };
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1BEC.s")
+static s32 (*D_808B1FA4[])(BgSpot09Obj* this, GlobalContext* globalCtx) = {
+    func_808B1BEC,
+    func_808B1AE0,
+    func_808B1BA0,
+};
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1C70.s")
+static InitChainEntry initChain1[] = {
+    ICHAIN_F32(unk_F4, 7200, ICHAIN_CONTINUE),
+    ICHAIN_F32(unk_F8, 3000, ICHAIN_CONTINUE),
+    ICHAIN_F32(unk_FC, 7200, ICHAIN_STOP),
+};
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1CEC.s")
+static InitChainEntry initChain2[] = {
+    ICHAIN_F32(unk_F4, 7200, ICHAIN_CONTINUE),
+    ICHAIN_F32(unk_F8, 800, ICHAIN_CONTINUE),
+    ICHAIN_F32(unk_FC, 1500, ICHAIN_STOP),
+};
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1D18.s")
+static u32 dlists[] = { 0x06000100, 0x06003970, 0x06001120, 0x06007D40, 0x06006210 };
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/func_808B1D44.s")
+extern UNK_TYPE D_06008010;
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Init.s")
+static s32 func_808B1AE0(BgSpot09Obj* this, GlobalContext* globalCtx) {
+    s32 carpentersRescued;
+    Actor* thisx = &this->dyna.actor;
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Destroy.s")
+    if (gSaveContext.scene_setup_index >= 4) {
+        return thisx->params == 0;
+    }
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Update.s")
+    carpentersRescued = (gSaveContext.event_chk_inf[9] & 0xF) == 0xF;
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Bg_Spot09_Obj/BgSpot09Obj_Draw.s")
+    if (LINK_AGE_IN_YEARS == YEARS_ADULT) {
+        switch (thisx->params) {
+            case 0:
+                return 0;
+            case 1:
+                return !carpentersRescued;
+            case 4:
+                return carpentersRescued;
+            case 3:
+                return 1;
+        }
+    } else {
+        return thisx->params == 2;
+    }
+
+    return 0;
+}
+
+static s32 func_808B1BA0(BgSpot09Obj* this, GlobalContext* globalCtx) {
+    Actor* thisx = &this->dyna.actor;
+    if (thisx->params == 3) {
+        Actor_SetScale(thisx, 0.1f);
+    } else {
+        Actor_SetScale(thisx, 1.0f);
+    }
+    return 1;
+}
+
+static s32 func_808B1BEC(BgSpot09Obj* this, GlobalContext* globalCtx) {
+    Actor* thisx = &this->dyna.actor;
+    s32 localC = 0;
+    s32 pad[2];
+
+    if (D_808B1F90[thisx->params] != 0) {
+        DynaPolyInfo_SetActorMove(thisx, 0);
+        DynaPolyInfo_Alloc(D_808B1F90[thisx->params], &localC);
+        this->dyna.dynaPolyId = DynaPolyInfo_RegisterActor(globalCtx, &globalCtx->colCtx.dyna, thisx, localC);
+    }
+    return 1;
+}
+
+static s32 func_808B1C70(BgSpot09Obj* this, GlobalContext* globalCtx) {
+    s32 i;
+    for (i = 0; i < ARRAY_COUNT(D_808B1FA4); i++) {
+        if (!D_808B1FA4[i](this, globalCtx)) {
+            return 0;
+        }
+    }
+    return 1;
+}
+
+static s32 func_808B1CEC(BgSpot09Obj* this, GlobalContext* globalCtx) {
+    Actor_ProcessInitChain(&this->dyna.actor, &initChain1);
+    return 1;
+}
+
+static s32 func_808B1D18(BgSpot09Obj* this, GlobalContext* globalCtx) {
+    Actor_ProcessInitChain(&this->dyna.actor, &initChain2);
+    return 1;
+}
+
+static s32 func_808B1D44(BgSpot09Obj* this, GlobalContext* globalCtx) {
+    if (this->dyna.actor.params == 3) {
+        return func_808B1D18(this, globalCtx);
+    } else {
+        return func_808B1CEC(this, globalCtx);
+    }
+}
+
+static void BgSpot09Obj_Init(BgSpot09Obj* this, GlobalContext* globalCtx) {
+    Actor* thisx = &this->dyna.actor;
+
+    osSyncPrintf("Spot09 Object [arg_data : 0x%04x](大工救出フラグ 0x%x)\n", thisx->params,
+                 gSaveContext.event_chk_inf[9] & 0xF);
+    thisx->params &= 0xFF;
+    if ((thisx->params < 0) || (thisx->params >= 5)) {
+        osSyncPrintf("Error : Spot 09 object の arg_data が判別出来ない(%s %d)(arg_data 0x%04x)\n",
+                     "../z_bg_spot09_obj.c", 322, thisx->params);
+    }
+
+    if (!func_808B1C70(this, globalCtx)) {
+        Actor_Kill(thisx);
+    } else if (!func_808B1D44(this, globalCtx)) {
+        Actor_Kill(thisx);
+    }
+}
+
+static void BgSpot09Obj_Destroy(BgSpot09Obj* this, GlobalContext* globalCtx) {
+    DynaCollisionContext* dynaColCtx = &globalCtx->colCtx.dyna;
+    Actor* thisx = &this->dyna.actor;
+
+    if (thisx->params != 0) {
+        DynaPolyInfo_Free(globalCtx, dynaColCtx, this->dyna.dynaPolyId);
+    }
+}
+
+static void BgSpot09Obj_Update(BgSpot09Obj* this, GlobalContext* globalCtx) {
+}
+
+static void BgSpot09Obj_Draw(BgSpot09Obj* this, GlobalContext* globalCtx) {
+    Actor* thisx = &this->dyna.actor;
+    GraphicsContext* gfxCtx;
+    Gfx* gfxArr[3];
+
+    Draw_DListOpa(globalCtx, dlists[thisx->params]);
+    if (thisx->params == 3) {
+        gfxCtx = globalCtx->state.gfxCtx;
+        func_800C6AC4(gfxArr, globalCtx->state.gfxCtx, "../z_bg_spot09_obj.c", 388);
+        func_80093D84(globalCtx->state.gfxCtx);
+
+        gSPMatrix(gfxCtx->polyXlu.p++, Matrix_NewMtx(globalCtx->state.gfxCtx, "../z_bg_spot09_obj.c", 391),
+                  G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
+        gSPDisplayList(gfxCtx->polyXlu.p++, &D_06008010);
+
+        func_800C6B54(gfxArr, globalCtx->state.gfxCtx, "../z_bg_spot09_obj.c", 396);
+    }
+}
diff --git a/src/overlays/actors/ovl_Bg_Spot09_Obj/z_bg_spot09_obj.h b/src/overlays/actors/ovl_Bg_Spot09_Obj/z_bg_spot09_obj.h
index 55bbe8dce9..5537972197 100644
--- a/src/overlays/actors/ovl_Bg_Spot09_Obj/z_bg_spot09_obj.h
+++ b/src/overlays/actors/ovl_Bg_Spot09_Obj/z_bg_spot09_obj.h
@@ -5,8 +5,8 @@
 #include <global.h>
 
 typedef struct {
-    /* 0x0000 */ Actor actor;
-    /* 0x014C */ char unk_14C[0x1C];
+    /* 0x0000 */ DynaPolyActor dyna;
+    /* 0x0164 */ char unk_164[0x04];
 } BgSpot09Obj; // size = 0x0168
 
 extern const ActorInit Bg_Spot09_Obj_InitVars;
diff --git a/undefined_syms.txt b/undefined_syms.txt
index 03d92633d5..80c6aaebd7 100644
--- a/undefined_syms.txt
+++ b/undefined_syms.txt
@@ -149,6 +149,9 @@ DL_VASE = 0x06000000;
 // z_door_toki
 DOOR_TOKI_COLLISION_DATA = 0x06007888;
 
+// z_bg_spot09_obj
+D_06008010 = 0x06008010;
+
 // z_bg_spot18_futa
 DL_SPOT18_FUTA = 0x06000368;
 DL_SPOT18_FUTA2 = 0x06000150;