diff --git a/asm/non_matching/objectBD/sub_080A22C4.inc b/asm/non_matching/objectBD/sub_080A22C4.inc
new file mode 100644
index 00000000..20ae077f
--- /dev/null
+++ b/asm/non_matching/objectBD/sub_080A22C4.inc
@@ -0,0 +1,66 @@
+	.syntax unified
+	push {r4, r5, lr}
+	adds r4, r0, #0
+	ldrb r5, [r4, #0xc]
+	cmp r5, #0
+	beq _080A22FC
+	cmp r5, #1
+	beq _080A231C
+	ldrb r0, [r4, #0xe]
+	subs r0, #1
+	strb r0, [r4, #0xe]
+	lsls r0, r0, #0x18
+	cmp r0, #0
+	bne _080A233E
+	movs r0, #8
+	strb r0, [r4, #0xe]
+	ldrb r0, [r4, #0xf]
+	adds r0, #1
+	movs r1, #3
+	ands r0, r1
+	strb r0, [r4, #0xf]
+	ldrb r1, [r4, #0xd]
+	adds r0, r1, r0
+	strb r0, [r4, #0x1e]
+	lsls r1, r1, #0x18
+	lsls r0, r0, #0x18
+	cmp r1, r0
+	bne _080A233E
+	b _080A233A
+_080A22FC:
+	adds r0, r4, #0
+	bl sub_080A2340
+	movs r0, #8
+	strb r0, [r4, #0xe]
+	strb r5, [r4, #0xf]
+	ldrb r0, [r4, #0x1e]
+	strb r0, [r4, #0xd]
+	bl Random
+	movs r1, #3
+	ands r0, r1
+	lsls r0, r0, #4
+	adds r0, #0x1e
+	strh r0, [r4, #0x24]
+	b _080A233E
+_080A231C:
+	ldrh r0, [r4, #0x24]
+	subs r0, #1
+	strh r0, [r4, #0x24]
+	lsls r0, r0, #0x10
+	cmp r0, #0
+	bne _080A233E
+	bl Random
+	movs r1, #7
+	ands r0, r1
+	lsls r0, r0, #4
+	adds r0, #0x1e
+	strh r0, [r4, #0x24]
+	movs r0, #2
+	b _080A233C
+_080A233A:
+	movs r0, #1
+_080A233C:
+	strb r0, [r4, #0xc]
+_080A233E:
+	pop {r4, r5, pc}
+	.syntax divided
diff --git a/asm/object/objectBD.s b/asm/object/objectBD.s
deleted file mode 100644
index bd5c073d..00000000
--- a/asm/object/objectBD.s
+++ /dev/null
@@ -1,182 +0,0 @@
-	.include "asm/macros.inc"
-
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-
-	thumb_func_start ObjectBD
-ObjectBD: @ 0x080A225C
-	push {lr}
-	ldr r2, _080A2270 @ =gUnk_0812503C
-	ldrb r1, [r0, #0xa]
-	lsls r1, r1, #2
-	adds r1, r1, r2
-	ldr r1, [r1]
-	bl _call_via_r1
-	pop {pc}
-	.align 2, 0
-_080A2270: .4byte gUnk_0812503C
-
-	thumb_func_start sub_080A2274
-sub_080A2274: @ 0x080A2274
-	push {lr}
-	adds r1, r0, #0
-	ldrb r0, [r1, #0xc]
-	cmp r0, #0
-	bne _080A22AE
-	adds r0, r1, #0
-	bl sub_080A2340
-	movs r0, #0xbd
-	movs r1, #1
-	movs r2, #0
-	bl CreateObject
-	movs r0, #0x80
-	lsls r0, r0, #0x12
-	ldrb r0, [r0, #7]
-	movs r1, #3
-	cmp r0, #1
-	bne _080A229C
-	movs r1, #2
-_080A229C:
-	movs r0, #0xbd
-	movs r2, #0
-	bl CreateObject
-	movs r0, #0xbd
-	movs r1, #4
-	movs r2, #0
-	bl CreateObject
-_080A22AE:
-	pop {pc}
-
-	thumb_func_start sub_080A22B0
-sub_080A22B0: @ 0x080A22B0
-	push {lr}
-	adds r1, r0, #0
-	ldrb r0, [r1, #0xc]
-	cmp r0, #0
-	bne _080A22C0
-	adds r0, r1, #0
-	bl sub_080A2340
-_080A22C0:
-	pop {pc}
-	.align 2, 0
-
-	thumb_func_start sub_080A22C4
-sub_080A22C4: @ 0x080A22C4
-	push {r4, r5, lr}
-	adds r4, r0, #0
-	ldrb r5, [r4, #0xc]
-	cmp r5, #0
-	beq _080A22FC
-	cmp r5, #1
-	beq _080A231C
-	ldrb r0, [r4, #0xe]
-	subs r0, #1
-	strb r0, [r4, #0xe]
-	lsls r0, r0, #0x18
-	cmp r0, #0
-	bne _080A233E
-	movs r0, #8
-	strb r0, [r4, #0xe]
-	ldrb r0, [r4, #0xf]
-	adds r0, #1
-	movs r1, #3
-	ands r0, r1
-	strb r0, [r4, #0xf]
-	ldrb r1, [r4, #0xd]
-	adds r0, r1, r0
-	strb r0, [r4, #0x1e]
-	lsls r1, r1, #0x18
-	lsls r0, r0, #0x18
-	cmp r1, r0
-	bne _080A233E
-	b _080A233A
-_080A22FC:
-	adds r0, r4, #0
-	bl sub_080A2340
-	movs r0, #8
-	strb r0, [r4, #0xe]
-	strb r5, [r4, #0xf]
-	ldrb r0, [r4, #0x1e]
-	strb r0, [r4, #0xd]
-	bl Random
-	movs r1, #3
-	ands r0, r1
-	lsls r0, r0, #4
-	adds r0, #0x1e
-	strh r0, [r4, #0x24]
-	b _080A233E
-_080A231C:
-	ldrh r0, [r4, #0x24]
-	subs r0, #1
-	strh r0, [r4, #0x24]
-	lsls r0, r0, #0x10
-	cmp r0, #0
-	bne _080A233E
-	bl Random
-	movs r1, #7
-	ands r0, r1
-	lsls r0, r0, #4
-	adds r0, #0x1e
-	strh r0, [r4, #0x24]
-	movs r0, #2
-	b _080A233C
-_080A233A:
-	movs r0, #1
-_080A233C:
-	strb r0, [r4, #0xc]
-_080A233E:
-	pop {r4, r5, pc}
-
-	thumb_func_start sub_080A2340
-sub_080A2340: @ 0x080A2340
-	ldrb r1, [r0, #0xa]
-	lsls r1, r1, #3
-	ldr r2, _080A239C @ =gUnk_08125014
-	adds r1, r1, r2
-	ldrh r2, [r1]
-	strh r2, [r0, #0x2e]
-	ldrh r2, [r1, #2]
-	strh r2, [r0, #0x32]
-	ldrh r2, [r1, #4]
-	strb r2, [r0, #0x1e]
-	ldrb r1, [r1, #6]
-	movs r2, #0x29
-	adds r2, r2, r0
-	mov ip, r2
-	movs r2, #7
-	ands r2, r1
-	mov r1, ip
-	ldrb r3, [r1]
-	movs r1, #8
-	rsbs r1, r1, #0
-	ands r1, r3
-	orrs r1, r2
-	mov r2, ip
-	strb r1, [r2]
-	ldrb r3, [r0, #0x19]
-	movs r2, #0x3f
-	adds r1, r2, #0
-	ands r1, r3
-	movs r3, #0x40
-	orrs r1, r3
-	strb r1, [r0, #0x19]
-	ldrb r1, [r0, #0x1b]
-	ands r2, r1
-	orrs r2, r3
-	strb r2, [r0, #0x1b]
-	ldrb r2, [r0, #0x18]
-	movs r1, #4
-	rsbs r1, r1, #0
-	ands r1, r2
-	movs r2, #2
-	orrs r1, r2
-	strb r1, [r0, #0x18]
-	movs r1, #1
-	strb r1, [r0, #0xc]
-	bx lr
-	.align 2, 0
-_080A239C: .4byte gUnk_08125014
diff --git a/assets/assets.json b/assets/assets.json
index 8a554e60..48bcb6a2 100644
--- a/assets/assets.json
+++ b/assets/assets.json
@@ -45179,11 +45179,6 @@
     "start": 1200144,
     "size": 4
   },
-  {
-    "path": "objectBD/gUnk_08125014.bin",
-    "start": 1200148,
-    "size": 40
-  },
   {
     "path": "animations/gSpriteAnimations_Pinwheel_0.bin",
     "start": 1200232,
diff --git a/data/const/object/objectBD.s b/data/const/object/objectBD.s
deleted file mode 100644
index 18665ac9..00000000
--- a/data/const/object/objectBD.s
+++ /dev/null
@@ -1,15 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.section .rodata
-    .align 2
-
-gUnk_08125014:: @ 08125014
-	.incbin "objectBD/gUnk_08125014.bin"
-
-gUnk_0812503C:: @ 0812503C
-	.4byte sub_080A2274
-	.4byte sub_080A22B0
-	.4byte sub_080A22B0
-	.4byte sub_080A22B0
-	.4byte sub_080A22C4
diff --git a/linker.ld b/linker.ld
index 3e2b630f..923631c2 100644
--- a/linker.ld
+++ b/linker.ld
@@ -813,7 +813,7 @@ SECTIONS {
         src/object/gyorgBossObject.o(.text);
         src/object/windcrest.o(.text);
         src/object/litArea.o(.text);
-        asm/object/objectBD.o(.text);
+        src/object/objectBD.o(.text);
         src/object/pinwheel.o(.text);
         src/object/objectBF.o(.text);
         src/object/enemyItem.o(.text);
@@ -1567,7 +1567,7 @@ SECTIONS {
         data/const/object/objectB9.o(.rodata);
         src/object/gyorgBossObject.o(.rodata);
         data/const/object/windcrest.o(.rodata);
-        data/const/object/objectBD.o(.rodata);
+        src/object/objectBD.o(.rodata);
         data/const/object/pinwheel.o(.rodata);
         data/animations/object/pinwheel.o(.rodata);
         src/object/objectC1.o(.rodata);
diff --git a/src/object/objectBD.c b/src/object/objectBD.c
new file mode 100644
index 00000000..6e12c57c
--- /dev/null
+++ b/src/object/objectBD.c
@@ -0,0 +1,112 @@
+/**
+ * @file objectBD.c
+ * @ingroup Objects
+ *
+ * @brief ObjectBD object
+ */
+
+#define NENT_DEPRECATED
+#include "global.h"
+#include "object.h"
+#include "functions.h"
+
+void sub_080A2274(Entity*);
+void sub_080A22B0(Entity*);
+void sub_080A22C4(Entity*);
+void sub_080A2340(Entity*);
+
+typedef struct {
+    u16 unk_0;
+    u16 unk_2;
+    u16 unk_4;
+    u8 unk_6;
+    u8 pad;
+} struct_08125014;
+
+const struct_08125014 gUnk_08125014[] = {
+    { 120, 48, 16, 4, 0 }, { 136, 81, 22, 3, 0 }, { 190, 20, 25, 2, 0 }, { 192, 81, 26, 2, 0 }, { 32, 104, 27, 3, 0 },
+};
+
+void ObjectBD(Entity* this) {
+    static void (*const gUnk_0812503C[])(Entity*) = {
+        sub_080A2274, sub_080A22B0, sub_080A22B0, sub_080A22B0, sub_080A22C4,
+    };
+    gUnk_0812503C[this->type](this);
+}
+
+void sub_080A2274(Entity* this) {
+    u32 addr;
+    u32 type;
+
+    if (this->action == 0) {
+        sub_080A2340(this);
+        CreateObject(OBJECT_BD, 1, 0);
+        addr = 0x02000000; // TODO write to 0x2000007
+        if (*(u8*)(addr + 7) == 1) {
+            type = 2;
+        } else {
+            type = 3;
+        }
+        CreateObject(OBJECT_BD, type, 0);
+        CreateObject(OBJECT_BD, 4, 0);
+    }
+}
+
+void sub_080A22B0(Entity* this) {
+    if (this->action == 0) {
+        sub_080A2340(this);
+    }
+}
+
+NONMATCH("asm/non_matching/objectBD/sub_080A22C4.inc", void sub_080A22C4(Entity* this)) {
+    u8 bVar1;
+    u8 uVar2;
+    s16 sVar3;
+    u32 uVar4;
+    u32 tmp1, tmp2, tmp3, tmp4;
+
+    switch (this->action) {
+        case 0:
+            sub_080A2340(this);
+            this->actionDelay = 8;
+            this->field_0xf = 0;
+            this->subAction = this->frameIndex;
+            this->speed = (Random() & 3) * 0x10 + 0x1e;
+            break;
+        case 1:
+            if (--this->speed != 0) {
+                return;
+            }
+            this->speed = (Random() & 7) * 0x10 + 0x1e;
+            this->action = 2;
+            break;
+        default:
+            if (--this->actionDelay != 0) {
+                return;
+            }
+            this->actionDelay = 8;
+            this->field_0xf = tmp2 = (this->field_0xf + 1) & 3;
+            tmp3 = this->subAction;
+            tmp1 = tmp3 + tmp2;
+            this->frameIndex = tmp1;
+            if (tmp3 * 0x1000000 != tmp1 * 0x1000000) {
+                return;
+            }
+            this->action = 1;
+            break;
+    }
+}
+END_NONMATCH
+
+void sub_080A2340(Entity* this) {
+    const struct_08125014* ptr;
+    ptr = &gUnk_08125014[this->type];
+    this->x.HALF.HI = ptr->unk_0;
+    this->y.HALF.HI = ptr->unk_2;
+    this->frameIndex = ptr->unk_4;
+    this->spritePriority.b0 = ptr->unk_6;
+    this->spriteRendering.b3 = 1;
+    this->spriteOrientation.flipY = 1;
+    this->spriteSettings.draw = 2;
+    this->action = 1;
+}