diff --git a/asm/vaatiRebornEnemy.s b/asm/vaatiRebornEnemy.s
index c7df101b..d2092068 100644
--- a/asm/vaatiRebornEnemy.s
+++ b/asm/vaatiRebornEnemy.s
@@ -7,180 +7,6 @@
 	.text
 
 
-	thumb_func_start sub_0803D408
-sub_0803D408: @ 0x0803D408
-	push {r4, r5, lr}
-	adds r4, r0, #0
-	adds r2, r4, #0
-	adds r2, #0x74
-	ldrb r0, [r2]
-	cmp r0, #1
-	beq _0803D458
-	cmp r0, #1
-	bgt _0803D420
-	cmp r0, #0
-	beq _0803D42A
-	b _0803D558
-_0803D420:
-	cmp r0, #2
-	beq _0803D478
-	cmp r0, #3
-	beq _0803D4FC
-	b _0803D558
-_0803D42A:
-	ldrb r0, [r4, #0xe]
-	subs r0, #1
-	strb r0, [r4, #0xe]
-	lsls r0, r0, #0x18
-	cmp r0, #0
-	beq _0803D438
-	b _0803D558
-_0803D438:
-	ldrb r0, [r2]
-	adds r0, #1
-	strb r0, [r2]
-	movs r0, #0x20
-	strb r0, [r4, #0xe]
-	adds r0, r4, #0
-	movs r1, #3
-	bl InitAnimationForceUpdate
-	ldr r0, _0803D454 @ =0x0000019B
-	bl SoundReq
-	b _0803D558
-	.align 2, 0
-_0803D454: .4byte 0x0000019B
-_0803D458:
-	adds r0, r4, #0
-	adds r0, #0x5a
-	ldrb r1, [r0]
-	movs r0, #0x80
-	ands r0, r1
-	cmp r0, #0
-	beq _0803D558
-	movs r0, #2
-	strb r0, [r2]
-	ldrb r1, [r4, #0x18]
-	subs r0, #6
-	ands r0, r1
-	strb r0, [r4, #0x18]
-	movs r0, #0x10
-	strb r0, [r4, #0xe]
-	b _0803D558
-_0803D478:
-	ldrb r0, [r4, #0xe]
-	subs r0, #1
-	strb r0, [r4, #0xe]
-	lsls r0, r0, #0x18
-	cmp r0, #0
-	bne _0803D558
-	ldrb r0, [r2]
-	adds r0, #1
-	strb r0, [r2]
-	adds r0, r4, #0
-	bl sub_0803E028
-	cmp r0, #0
-	bne _0803D4D0
-	bl Random
-	adds r5, r4, #0
-	adds r5, #0x81
-	ldrb r1, [r5]
-	adds r1, #1
-	movs r2, #3
-	ands r0, r2
-	adds r1, r1, r0
-	strb r1, [r5]
-	ldrb r0, [r5]
-	movs r1, #5
-	bl __modsi3
-	strb r0, [r5]
-	ldrb r1, [r5]
-	lsls r1, r1, #2
-	ldr r0, _0803D4F4 @ =gUnk_080D04AC
-	adds r1, r1, r0
-	ldr r2, _0803D4F8 @ =gRoomControls
-	ldrh r0, [r1]
-	ldrh r3, [r2, #6]
-	adds r0, r0, r3
-	adds r0, #0x10
-	strh r0, [r4, #0x2e]
-	ldrh r0, [r1, #2]
-	ldrh r2, [r2, #8]
-	adds r0, r0, r2
-	adds r0, #0x10
-	strh r0, [r4, #0x32]
-_0803D4D0:
-	ldrb r1, [r4, #0x18]
-	movs r0, #4
-	rsbs r0, r0, #0
-	ands r0, r1
-	movs r1, #1
-	orrs r0, r1
-	strb r0, [r4, #0x18]
-	movs r0, #0x20
-	strb r0, [r4, #0xe]
-	adds r0, r4, #0
-	movs r1, #4
-	bl InitAnimationForceUpdate
-	movs r0, #0xf5
-	bl SoundReq
-	b _0803D558
-	.align 2, 0
-_0803D4F4: .4byte gUnk_080D04AC
-_0803D4F8: .4byte gRoomControls
-_0803D4FC:
-	adds r0, r4, #0
-	adds r0, #0x5a
-	ldrb r1, [r0]
-	movs r0, #0x80
-	ands r0, r1
-	cmp r0, #0
-	beq _0803D558
-	ldrb r1, [r4, #0x18]
-	movs r0, #4
-	rsbs r0, r0, #0
-	ands r0, r1
-	movs r1, #1
-	orrs r0, r1
-	strb r0, [r4, #0x18]
-	adds r0, r4, #0
-	adds r0, #0x81
-	ldrb r0, [r0]
-	cmp r0, #4
-	bls _0803D52E
-	ldr r1, _0803D544 @ =gPlayerEntity
-	ldrh r0, [r1, #0x2e]
-	strh r0, [r4, #0x2e]
-	ldrh r0, [r1, #0x32]
-	subs r0, #0x18
-	strh r0, [r4, #0x32]
-_0803D52E:
-	adds r1, r4, #0
-	adds r1, #0x77
-	ldrb r0, [r1]
-	subs r0, #1
-	strb r0, [r1]
-	lsls r0, r0, #0x18
-	cmp r0, #0
-	bne _0803D548
-	movs r0, #1
-	strb r0, [r4, #0xc]
-	b _0803D54E
-	.align 2, 0
-_0803D544: .4byte gPlayerEntity
-_0803D548:
-	movs r0, #0
-	strb r0, [r2]
-	movs r0, #0x10
-_0803D54E:
-	strb r0, [r4, #0xe]
-	adds r0, r4, #0
-	movs r1, #0
-	bl InitAnimationForceUpdate
-_0803D558:
-	adds r0, r4, #0
-	bl UpdateAnimationSingleFrame
-	pop {r4, r5, pc}
-
 	thumb_func_start sub_0803D560
 sub_0803D560: @ 0x0803D560
 	push {r4, lr}
diff --git a/src/enemy/vaatiRebornEnemy.c b/src/enemy/vaatiRebornEnemy.c
index 272fbb00..7ab2d240 100644
--- a/src/enemy/vaatiRebornEnemy.c
+++ b/src/enemy/vaatiRebornEnemy.c
@@ -6,6 +6,7 @@
 #include "audio.h"
 #include "functions.h"
 
+extern u32 __modsi3(u32, u32);
 extern void sub_080AEFB4(Entity*);
 extern u8 gEntCount;
 
@@ -51,7 +52,7 @@ void (*const gUnk_080D04A0[])(Entity*) = {
 };
 
 extern const xy gUnk_080D04A8[];
-extern const u16 gUnk_080D04AC[];
+extern const Coords gUnk_080D04AC[];
 
 void VaatiRebornEnemy(Entity* this) {
     switch (this->type) {
@@ -206,3 +207,59 @@ void sub_0803D264(Entity* this) {
     }
     UpdateAnimationSingleFrame(this);
 }
+
+void sub_0803D408(Entity* this) {
+    const Coords* ptr;
+
+    switch (this->field_0x74.HALF.LO) {
+        case 0:
+            if (--this->actionDelay == 0) {
+                this->field_0x74.HALF.LO++;
+                this->actionDelay = 0x20;
+                InitAnimationForceUpdate(this, 3);
+                SoundReq(SFX_19B);
+            }
+            break;
+        case 1:
+            if ((this->frames.all & 0x80) != 0) {
+                this->field_0x74.HALF.LO = 2;
+                this->spriteSettings.b.draw = 0;
+                this->actionDelay = 0x10;
+            }
+            break;
+        case 2:
+            if (--this->actionDelay == 0) {
+                this->field_0x74.HALF.LO++;
+                if (sub_0803E028(this) == 0) {
+                    this->field_0x80.HALF.HI += 1 + (Random() & 3);
+                    this->field_0x80.HALF.HI = __modsi3(this->field_0x80.HALF.HI, 5);
+                    ptr = &gUnk_080D04AC[this->field_0x80.HALF.HI];
+                    this->x.HALF.HI = gRoomControls.roomOriginX + ptr->HALF.x + 0x10;
+                    this->y.HALF.HI = gRoomControls.roomOriginY + ptr->HALF.y + 0x10;
+                }
+                this->spriteSettings.b.draw = 1;
+                this->actionDelay = 0x20;
+                InitAnimationForceUpdate(this, 4);
+                SoundReq(SFX_F5);
+            }
+            break;
+        case 3:
+            if ((this->frames.all & 0x80) != 0) {
+                this->spriteSettings.b.draw = 1;
+                if (4 < this->field_0x80.HALF.HI) {
+                    this->x.HALF.HI = gPlayerEntity.x.HALF.HI;
+                    this->y.HALF.HI = gPlayerEntity.y.HALF.HI - 0x18;
+                }
+                if (--this->field_0x76.HALF.HI == 0) {
+                    this->action = 1;
+                    this->actionDelay = 1;
+                } else {
+                    this->field_0x74.HALF.LO = 0;
+                    this->actionDelay = 0x10;
+                }
+                InitAnimationForceUpdate(this, 0);
+            }
+            break;
+    }
+    UpdateAnimationSingleFrame(this);
+}