diff --git a/src/overlays/effects/ovl_Effect_Ss_Bubble/z_eff_ss_bubble.c b/src/overlays/effects/ovl_Effect_Ss_Bubble/z_eff_ss_bubble.c
index 4387b92846..8f6eb2e9fb 100644
--- a/src/overlays/effects/ovl_Effect_Ss_Bubble/z_eff_ss_bubble.c
+++ b/src/overlays/effects/ovl_Effect_Ss_Bubble/z_eff_ss_bubble.c
@@ -58,10 +58,7 @@ void EffectSsBubble_Draw(PlayState* play, u32 index, EffectSs* this) {
 
 void EffectSsBubble_Update(PlayState* play, u32 index, EffectSs* this) {
     WaterBox* waterBox;
-    f32 waterSurfaceY;
-    Vec3f ripplePos;
-
-    waterSurfaceY = this->pos.y;
+    f32 waterSurfaceY = this->pos.y;
 
     // kill bubble if it's out of range of a water box
     if (!WaterBox_GetSurface1(play, &play->colCtx, this->pos.x, this->pos.z, &waterSurfaceY, &waterBox)) {
@@ -70,6 +67,8 @@ void EffectSsBubble_Update(PlayState* play, u32 index, EffectSs* this) {
     }
 
     if (waterSurfaceY < this->pos.y) {
+        Vec3f ripplePos;
+
         ripplePos.x = this->pos.x;
         ripplePos.y = waterSurfaceY;
         ripplePos.z = this->pos.z;
diff --git a/src/overlays/effects/ovl_Effect_Ss_Dead_Dd/z_eff_ss_dead_dd.c b/src/overlays/effects/ovl_Effect_Ss_Dead_Dd/z_eff_ss_dead_dd.c
index a0cfd80c39..dff7cea06f 100644
--- a/src/overlays/effects/ovl_Effect_Ss_Dead_Dd/z_eff_ss_dead_dd.c
+++ b/src/overlays/effects/ovl_Effect_Ss_Dead_Dd/z_eff_ss_dead_dd.c
@@ -29,7 +29,6 @@ EffectSsInit Effect_Ss_Dead_Dd_InitVars = {
 };
 
 u32 EffectSsDeadDd_Init(PlayState* play, u32 index, EffectSs* this, void* initParamsx) {
-    s32 i;
     EffectSsDeadDdInitParams* initParams = (EffectSsDeadDdInitParams*)initParamsx;
 
     if (initParams->type == 0) {
@@ -58,6 +57,8 @@ u32 EffectSsDeadDd_Init(PlayState* play, u32 index, EffectSs* this, void* initPa
         this->rEnvColorB = initParams->envColor.b;
 
     } else if (initParams->type == 1) {
+        s32 i;
+
         this->life = initParams->life;
         this->rScaleStep = initParams->scaleStep;
         this->rAlphaMode = 0;
diff --git a/src/overlays/effects/ovl_Effect_Ss_Dust/z_eff_ss_dust.c b/src/overlays/effects/ovl_Effect_Ss_Dust/z_eff_ss_dust.c
index 1910c5914b..62dfc4472d 100644
--- a/src/overlays/effects/ovl_Effect_Ss_Dust/z_eff_ss_dust.c
+++ b/src/overlays/effects/ovl_Effect_Ss_Dust/z_eff_ss_dust.c
@@ -37,7 +37,6 @@ static EffectSsUpdateFunc sUpdateFuncs[] = {
 };
 
 u32 EffectSsDust_Init(PlayState* play, u32 index, EffectSs* this, void* initParamsx) {
-    s32 randColorOffset;
     EffectSsDustInitParams* initParams = (EffectSsDustInitParams*)initParamsx;
 
     Math_Vec3f_Copy(&this->pos, &initParams->pos);
@@ -49,7 +48,8 @@ u32 EffectSsDust_Init(PlayState* play, u32 index, EffectSs* this, void* initPara
     this->draw = EffectSsDust_Draw;
 
     if (initParams->drawFlags & 4) {
-        randColorOffset = Rand_ZeroOne() * 20.0f - 10.0f;
+        s32 randColorOffset = Rand_ZeroOne() * 20.0f - 10.0f;
+
         this->rPrimColorR = initParams->primColor.r + randColorOffset;
         this->rPrimColorG = initParams->primColor.g + randColorOffset;
         this->rPrimColorB = initParams->primColor.b + randColorOffset;
diff --git a/src/overlays/effects/ovl_Effect_Ss_Extra/z_eff_ss_extra.c b/src/overlays/effects/ovl_Effect_Ss_Extra/z_eff_ss_extra.c
index 618759146e..471bed5f7b 100644
--- a/src/overlays/effects/ovl_Effect_Ss_Extra/z_eff_ss_extra.c
+++ b/src/overlays/effects/ovl_Effect_Ss_Extra/z_eff_ss_extra.c
@@ -26,13 +26,11 @@ EffectSsInit Effect_Ss_Extra_InitVars = {
 u32 EffectSsExtra_Init(PlayState* play, u32 index, EffectSs* this, void* initParamsx) {
     EffectSsExtraInitParams* initParams = (EffectSsExtraInitParams*)initParamsx;
     s32 pad;
-    s32 objectSlot;
-    uintptr_t oldSeg6;
-
-    objectSlot = Object_GetSlot(&play->objectCtx, OBJECT_YABUSAME_POINT);
+    s32 objectSlot = Object_GetSlot(&play->objectCtx, OBJECT_YABUSAME_POINT);
 
     if ((objectSlot >= 0) && Object_IsLoaded(&play->objectCtx, objectSlot)) {
-        oldSeg6 = gSegments[6];
+        uintptr_t oldSeg6 = gSegments[6];
+
         gSegments[6] = VIRTUAL_TO_PHYSICAL(play->objectCtx.slots[objectSlot].segment);
         this->pos = initParams->pos;
         this->velocity = initParams->velocity;
diff --git a/src/overlays/effects/ovl_Effect_Ss_Fhg_Flash/z_eff_ss_fhg_flash.c b/src/overlays/effects/ovl_Effect_Ss_Fhg_Flash/z_eff_ss_fhg_flash.c
index 186ed88766..c427ddca6b 100644
--- a/src/overlays/effects/ovl_Effect_Ss_Fhg_Flash/z_eff_ss_fhg_flash.c
+++ b/src/overlays/effects/ovl_Effect_Ss_Fhg_Flash/z_eff_ss_fhg_flash.c
@@ -172,21 +172,20 @@ void EffectSsFhgFlash_UpdateLightBall(PlayState* play, u32 index, EffectSs* this
 
 void EffectSsFhgFlash_UpdateShock(PlayState* play, u32 index, EffectSs* this) {
     s16 randBodyPart;
-    Player* player;
-    BossGanondrof* phantomGanon;
-    s16 rotStep;
+    s16 rotStep = Rand_ZeroOne() * 20000.0f;
 
-    rotStep = Rand_ZeroOne() * 20000.0f;
     this->rXZRot += rotStep + 0x4000;
 
     if (this->rParam == FHGFLASH_SHOCK_PLAYER) {
-        player = GET_PLAYER(play);
+        Player* player = GET_PLAYER(play);
+
         randBodyPart = Rand_ZeroFloat(PLAYER_BODYPART_MAX - 0.1f);
         this->pos.x = player->bodyPartsPos[randBodyPart].x + Rand_CenteredFloat(10.0f);
         this->pos.y = player->bodyPartsPos[randBodyPart].y + Rand_CenteredFloat(15.0f);
         this->pos.z = player->bodyPartsPos[randBodyPart].z + Rand_CenteredFloat(10.0f);
     } else if (this->rParam == FHGFLASH_SHOCK_PG) {
-        phantomGanon = (BossGanondrof*)this->actor;
+        BossGanondrof* phantomGanon = (BossGanondrof*)this->actor;
+
         randBodyPart = Rand_ZeroFloat(23.9f);
         this->pos.x = phantomGanon->bodyPartsPos[randBodyPart].x + Rand_CenteredFloat(15.0f);
         this->pos.y = phantomGanon->bodyPartsPos[randBodyPart].y + Rand_CenteredFloat(20.0f);
@@ -194,6 +193,8 @@ void EffectSsFhgFlash_UpdateShock(PlayState* play, u32 index, EffectSs* this) {
     }
 
     if (this->life < 100) {
+        s32 pad;
+
         this->rAlpha -= 50;
 
         if (this->rAlpha < 0) {
diff --git a/src/overlays/effects/ovl_Effect_Ss_Ice_Smoke/z_eff_ss_ice_smoke.c b/src/overlays/effects/ovl_Effect_Ss_Ice_Smoke/z_eff_ss_ice_smoke.c
index 89bd579292..790d157a71 100644
--- a/src/overlays/effects/ovl_Effect_Ss_Ice_Smoke/z_eff_ss_ice_smoke.c
+++ b/src/overlays/effects/ovl_Effect_Ss_Ice_Smoke/z_eff_ss_ice_smoke.c
@@ -24,12 +24,12 @@ u32 EffectSsIceSmoke_Init(PlayState* play, u32 index, EffectSs* this, void* init
     EffectSsIceSmokeInitParams* initParams = (EffectSsIceSmokeInitParams*)initParamsx;
     s32 pad;
     s32 objectSlot;
-    uintptr_t prevSeg6;
 
     objectSlot = Object_GetSlot(&play->objectCtx, OBJECT_FZ);
 
     if ((objectSlot >= 0) && Object_IsLoaded(&play->objectCtx, objectSlot)) {
-        prevSeg6 = gSegments[6];
+        uintptr_t prevSeg6 = gSegments[6];
+
         gSegments[6] = VIRTUAL_TO_PHYSICAL(play->objectCtx.slots[objectSlot].segment);
         Math_Vec3f_Copy(&this->pos, &initParams->pos);
         Math_Vec3f_Copy(&this->velocity, &initParams->velocity);
@@ -61,6 +61,10 @@ void EffectSsIceSmoke_Draw(PlayState* play, u32 index, EffectSs* this) {
 
     OPEN_DISPS(play->state.gfxCtx, "../z_eff_ss_ice_smoke.c", 155);
 
+#if !OOT_DEBUG
+    if (1) {}
+#endif
+
     objectSlot = Object_GetSlot(&play->objectCtx, OBJECT_FZ);
 
     if ((objectSlot >= 0) && Object_IsLoaded(&play->objectCtx, objectSlot)) {
diff --git a/src/overlays/effects/ovl_Effect_Ss_Kakera/z_eff_ss_kakera.c b/src/overlays/effects/ovl_Effect_Ss_Kakera/z_eff_ss_kakera.c
index b466818adc..29c243f689 100644
--- a/src/overlays/effects/ovl_Effect_Ss_Kakera/z_eff_ss_kakera.c
+++ b/src/overlays/effects/ovl_Effect_Ss_Kakera/z_eff_ss_kakera.c
@@ -78,9 +78,11 @@ u32 EffectSsKakera_Init(PlayState* play, u32 index, EffectSs* this, void* initPa
 f32 func_809A9818(f32 arg0, f32 arg1) {
     f32 temp_f2;
 
+#if OOT_DEBUG
     if (arg1 < 0.0f) {
         PRINTF("範囲がマイナス！！(randomD_sectionUniformity)\n");
     }
+#endif
 
     temp_f2 = Rand_ZeroOne() * arg1;
     return ((temp_f2 * 2.0f) - arg1) + arg0;
diff --git a/src/overlays/effects/ovl_Effect_Ss_Sibuki/z_eff_ss_sibuki.c b/src/overlays/effects/ovl_Effect_Ss_Sibuki/z_eff_ss_sibuki.c
index 7aaa867f84..5ee3a70cb8 100644
--- a/src/overlays/effects/ovl_Effect_Ss_Sibuki/z_eff_ss_sibuki.c
+++ b/src/overlays/effects/ovl_Effect_Ss_Sibuki/z_eff_ss_sibuki.c
@@ -79,10 +79,9 @@ void EffectSsSibuki_Draw(PlayState* play, u32 index, EffectSs* this) {
 }
 
 void EffectSsSibuki_Update(PlayState* play, u32 index, EffectSs* this) {
-    s32 pad[3];
-    f32 xzVelScale;
-    s16 yaw;
     Player* player = GET_PLAYER(play);
+    s32 pad[2];
+    f32 xzVelScale;
 
     if (this->pos.y <= player->actor.floorHeight) {
         this->life = 0;
@@ -92,7 +91,8 @@ void EffectSsSibuki_Update(PlayState* play, u32 index, EffectSs* this) {
         this->rMoveDelay--;
 
         if (this->rMoveDelay == 0) {
-            yaw = Camera_GetInputDirYaw(Play_GetCamera(play, CAM_ID_MAIN));
+            s16 yaw = Camera_GetInputDirYaw(Play_GetCamera(play, CAM_ID_MAIN));
+
             xzVelScale = ((200.0f + KREG(20)) * 0.01f) + ((0.1f * Rand_ZeroOne()) * (KREG(23) + 20.0f));
 
             if (this->rDirection != 0) {