diff --git a/data/overlays/actors/z_eff_dust.data.s b/data/overlays/actors/z_eff_dust.data.s
deleted file mode 100644
index 6cbb55f5b0..0000000000
--- a/data/overlays/actors/z_eff_dust.data.s
+++ /dev/null
@@ -1,20 +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 purpose registers
-
-.section .data
-
-.balign 16
-
-glabel Eff_Dust_InitVars
- .word 0x01010400, 0x00000030, 0x00010000, 0x00000568
-.word EffDust_Init
-.word EffDust_Destroy
-.word EffDust_Update
-.word EffDust_Draw
-glabel D_8099EB60
- .word 0xDF000000, 0x00000000, 0x00000000, 0x00000000
-
diff --git a/spec b/spec
index 00dff8369f..fda4e20c80 100644
--- a/spec
+++ b/spec
@@ -1612,7 +1612,6 @@ endseg
 beginseg
     name "ovl_Eff_Dust"
     include "build/src/overlays/actors/ovl_Eff_Dust/z_eff_dust.o"
-    include "build/data/overlays/actors/z_eff_dust.data.o"
     include "build/data/overlays/actors/z_eff_dust.reloc.o"
 endseg
 
diff --git a/src/overlays/actors/ovl_Eff_Dust/z_eff_dust.c b/src/overlays/actors/ovl_Eff_Dust/z_eff_dust.c
index bf0d809353..9e23d65325 100644
--- a/src/overlays/actors/ovl_Eff_Dust/z_eff_dust.c
+++ b/src/overlays/actors/ovl_Eff_Dust/z_eff_dust.c
@@ -9,9 +9,16 @@ void EffDust_Destroy(Actor* thisx, GlobalContext* globalCtx);
 void EffDust_Update(Actor* thisx, GlobalContext* globalCtx);
 void EffDust_Draw(Actor* thisx, GlobalContext* globalCtx);
 
+s32 func_8099D8E0(EffDust* this);
+
+f32 func_8099DB28(EffDust* this, GlobalContext* globalCtx);
+f32 func_8099DD74(EffDust* this, GlobalContext* globalCtx);
+f32 func_8099DFC0(EffDust* this, GlobalContext* globalCtx);
+f32 func_8099E4F4(EffDust* this, GlobalContext* globalCtx);
+f32 func_8099E784(EffDust* this, GlobalContext* globalCtx);
+
 extern UNK_TYPE D_04037880;
 
-/*
 const ActorInit Eff_Dust_InitVars = {
     ACTOR_EFF_DUST,
     ACTORTYPE_NPC,
@@ -23,9 +30,10 @@ const ActorInit Eff_Dust_InitVars = {
     (ActorFunc)EffDust_Update,
     (ActorFunc)EffDust_Draw,
 };
-*/
 
-extern Gfx D_8099EB60[];
+static Gfx *D_8099EB60[] = {
+ 0xDF000000, 0x00000000, 0x00000000, 0x00000000
+};
 
 //#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Eff_Dust/func_8099D8D0.s")
 
@@ -43,9 +51,65 @@ void func_8099D8D8(EffDust* this, EffDustActionFunc callback) {
 
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Eff_Dust/func_8099D8E0.s")
 
-s32 func_8099D8E0(EffDust* this);
+//#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Eff_Dust/EffDust_Init.s")
+
+void EffDust_Init(Actor *thisx, GlobalContext *globalCtx) {
+    EffDust *this = THIS;
+    u32 sp20;
+
+    sp20 = this->actor.params;
+    func_8099D8E0(this);
+
+    switch(sp20){
+    case 0:
+        func_8099D8D0(this, func_8099DB28);
+        func_8099D8D8(this, func_8099E4F4);
+        this->unk_0554 = 0.8f;
+        this->unk_0558 = 0.8f;
+        this->unk_0550 = 1.0f;
+        this->unk_055C = 0.1f;
+        break;
+
+    case 1:
+        func_8099D8D0(this, func_8099DD74);
+        func_8099D8D8(this, func_8099E4F4);
+        this->unk_0550 = 0.8f;
+        this->unk_0558 = 0.8f;
+        this->unk_0554 = 1.0f;
+        this->unk_055C = 0.5f;
+        break;
+
+    case 2:
+        func_8099D8D0(this, func_8099DFC0);
+        func_8099D8D8(this, func_8099E784);
+        this->unk_0550 = 0.5f;
+        this->unk_055C = 15.0f;
+        break;
+
+    case 3:
+        func_8099D8D0(this, func_8099DFC0);
+        func_8099D8D8(this, func_8099E784);
+        this->unk_0550 = 0.5f;
+        this->unk_055C = 10.0f;
+        break;
+
+    case 4:
+        func_8099D8D0(this, func_8099DFC0);
+        func_8099D8D8(this, func_8099E784);
+        this->actor.room = -1;
+        this->unk_0550 = 0.5f;
+        this->unk_055C = 20.0f;
+        break;
+
+    default:
+        SystemArena_FreeDebug(this, "../z_eff_dust.c", 0xCA);
+        break;
+
+    }
+
+    this->unk_054D = 0xA;
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Eff_Dust/EffDust_Init.s")
 
 //#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Eff_Dust/EffDust_Destroy.s")
 
@@ -56,24 +120,14 @@ void EffDust_Destroy(Actor *thisx, GlobalContext *globalCtx) {
 
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Eff_Dust/func_8099DB28.s")
 
-f32 func_8099DB28(EffDust* this, GlobalContext* globalCtx);
-
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Eff_Dust/func_8099DD74.s")
 
-f32 func_8099DD74(EffDust* this, GlobalContext* globalCtx);
-
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Eff_Dust/func_8099DFC0.s")
 
-f32 func_8099DFC0(EffDust* this, GlobalContext* globalCtx);
-
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Eff_Dust/EffDust_Update.s")
 
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Eff_Dust/func_8099E4F4.s")
 
-f32 func_8099E4F4(EffDust* this, GlobalContext* globalCtx);
-
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Eff_Dust/func_8099E784.s")
 
-f32 func_8099E784(EffDust* this, GlobalContext* globalCtx);
-
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_Eff_Dust/EffDust_Draw.s")
diff --git a/src/overlays/actors/ovl_Eff_Dust/z_eff_dust.h b/src/overlays/actors/ovl_Eff_Dust/z_eff_dust.h
index aabb22a96c..77a95db79f 100644
--- a/src/overlays/actors/ovl_Eff_Dust/z_eff_dust.h
+++ b/src/overlays/actors/ovl_Eff_Dust/z_eff_dust.h
@@ -10,7 +10,13 @@ typedef f32 (*EffDustActionFunc)(struct EffDust *, GlobalContext *);
 
 typedef struct EffDust {
     /* 0x0000 */ Actor actor;
-    /* 0x014C */ char unk_14C[0x414];
+    /* 0x014C */ char unk_14C[0x401];
+    /* 0x054D */ u8 unk_054D;
+    /* 0x054E */ char unk_54E[0x02];
+    /* 0x0550 */ f32 unk_0550;
+    /* 0x0554 */ f32 unk_0554;
+    /* 0x0558 */ f32 unk_0558;
+    /* 0x055C */ f32 unk_055C;
     /* 0x0560 */ EffDustActionFunc unk_0560;
     /* 0x0560 */ EffDustActionFunc unk_0564;
 } EffDust; // size = 0x0568