diff --git a/asm/rom_8034C54.s b/asm/rom_8034C54.s
deleted file mode 100644
index 684ab6dd0..000000000
--- a/asm/rom_8034C54.s
+++ /dev/null
@@ -1,814 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-
-
-	thumb_func_start sub_8035044
-sub_8035044: @ 8035044
-	push {r4-r6,lr}
-	adds r3, r0, 0
-	adds r4, r1, 0
-	ldr r0, =gUnknown_02022E10
-	ldr r1, [r0]
-	adds r6, r0, 0
-	cmp r1, 0
-	beq _080350A8
-	ldr r2, [r1, 0x4]
-	lsls r1, r3, 3
-	subs r0, r1, r3
-	lsls r0, 2
-	adds r2, r0, r2
-	ldrb r0, [r2]
-	adds r5, r1, 0
-	cmp r0, 0
-	beq _080350A8
-	str r4, [r2, 0x18]
-	cmp r4, 0
-	bge _08035078
-	movs r2, 0x1
-	negs r4, r4
-	b _0803507A
-	.pool
-_08035078:
-	movs r2, 0
-_0803507A:
-	ldr r0, [r6]
-	ldr r1, [r0, 0x4]
-	subs r0, r5, r3
-	lsls r0, 2
-	adds r0, r1
-	ldrb r3, [r0, 0x2]
-	cmp r3, 0x1
-	beq _0803509A
-	cmp r3, 0x1
-	ble _08035092
-	cmp r3, 0x2
-	beq _080350A2
-_08035092:
-	adds r1, r4, 0
-	bl sub_80350B0
-	b _080350A8
-_0803509A:
-	adds r1, r4, 0
-	bl sub_8035164
-	b _080350A8
-_080350A2:
-	adds r1, r4, 0
-	bl sub_80352C0
-_080350A8:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_8035044
-
-	thumb_func_start sub_80350B0
-sub_80350B0: @ 80350B0
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0x4
-	mov r8, r0
-	mov r9, r1
-	str r2, [sp]
-	ldr r5, [r0, 0x14]
-	ldrb r7, [r0, 0x1]
-	ldr r0, =gMain
-	mov r10, r0
-	cmp r5, 0
-	beq _0803511A
-	lsls r0, r7, 3
-	adds r0, 0x3C
-	mov r1, r10
-	adds r6, r0, r1
-_080350D6:
-	mov r0, r9
-	adds r1, r5, 0
-	bl __udivsi3
-	adds r4, r0, 0
-	adds r0, r4, 0
-	muls r0, r5
-	mov r2, r9
-	subs r2, r0
-	mov r9, r2
-	adds r0, r5, 0
-	movs r1, 0xA
-	bl __udivsi3
-	adds r5, r0, 0
-	mov r1, r8
-	ldrb r0, [r1, 0x9]
-	adds r1, r4, 0
-	muls r1, r0
-	mov r2, r8
-	ldrh r2, [r2, 0xA]
-	adds r1, r2
-	ldr r2, =0x000003ff
-	adds r0, r2, 0
-	ands r1, r0
-	ldrh r0, [r6]
-	ldr r2, =0xfffffc00
-	ands r0, r2
-	orrs r0, r1
-	strh r0, [r6]
-	adds r6, 0x8
-	adds r7, 0x1
-	cmp r5, 0
-	bne _080350D6
-_0803511A:
-	ldr r0, [sp]
-	cmp r0, 0
-	beq _08035140
-	lsls r0, r7, 3
-	add r0, r10
-	adds r0, 0x39
-	ldrb r2, [r0]
-	movs r1, 0x4
-	negs r1, r1
-	ands r1, r2
-	strb r1, [r0]
-	b _08035154
-	.pool
-_08035140:
-	lsls r2, r7, 3
-	add r2, r10
-	adds r2, 0x39
-	ldrb r1, [r2]
-	movs r0, 0x4
-	negs r0, r0
-	ands r0, r1
-	movs r1, 0x2
-	orrs r0, r1
-	strb r0, [r2]
-_08035154:
-	add sp, 0x4
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80350B0
-
-	thumb_func_start sub_8035164
-sub_8035164: @ 8035164
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0x4
-	adds r6, r0, 0
-	mov r8, r1
-	str r2, [sp]
-	ldr r5, [r6, 0x14]
-	ldr r3, =gUnknown_03000DD4
-	ldrb r0, [r6, 0x1]
-	str r0, [r3]
-	ldr r2, =gUnknown_03000DD8
-	movs r0, 0
-	str r0, [r2]
-	ldr r1, =gUnknown_03000DDC
-	subs r0, 0x1
-	str r0, [r1]
-	adds r7, r3, 0
-	mov r10, r1
-	ldr r0, =gMain
-	mov r9, r0
-	cmp r5, 0
-	beq _0803524C
-_08035196:
-	mov r0, r8
-	adds r1, r5, 0
-	bl __udivsi3
-	adds r4, r0, 0
-	adds r0, r4, 0
-	muls r0, r5
-	mov r1, r8
-	subs r1, r0
-	mov r8, r1
-	adds r0, r5, 0
-	movs r1, 0xA
-	bl __udivsi3
-	adds r5, r0, 0
-	cmp r4, 0
-	bne _080351C8
-	mov r2, r10
-	ldr r1, [r2]
-	movs r0, 0x1
-	negs r0, r0
-	cmp r1, r0
-	bne _080351C8
-	cmp r5, 0
-	bne _08035224
-_080351C8:
-	ldr r2, [r7]
-	lsls r2, 3
-	add r2, r9
-	ldrb r0, [r6, 0x9]
-	adds r3, r4, 0
-	muls r3, r0
-	ldrh r4, [r6, 0xA]
-	adds r3, r4
-	ldr r1, =0x000003ff
-	adds r0, r1, 0
-	ands r3, r0
-	ldrh r0, [r2, 0x3C]
-	ldr r4, =0xfffffc00
-	adds r1, r4, 0
-	ands r0, r1
-	orrs r0, r3
-	strh r0, [r2, 0x3C]
-	adds r2, 0x39
-	ldrb r0, [r2]
-	movs r1, 0x4
-	negs r1, r1
-	ands r0, r1
-	strb r0, [r2]
-	mov r2, r10
-	ldr r1, [r2]
-	movs r0, 0x1
-	negs r0, r0
-	cmp r1, r0
-	bne _0803523A
-	ldr r4, =gUnknown_03000DD8
-	ldr r0, [r4]
-	str r0, [r2]
-	b _0803523A
-	.pool
-_08035224:
-	ldr r0, [r7]
-	lsls r0, 3
-	add r0, r9
-	adds r0, 0x39
-	ldrb r1, [r0]
-	movs r2, 0x4
-	negs r2, r2
-	ands r1, r2
-	movs r2, 0x2
-	orrs r1, r2
-	strb r1, [r0]
-_0803523A:
-	ldr r0, [r7]
-	adds r0, 0x1
-	str r0, [r7]
-	ldr r4, =gUnknown_03000DD8
-	ldr r0, [r4]
-	adds r0, 0x1
-	str r0, [r4]
-	cmp r5, 0
-	bne _08035196
-_0803524C:
-	ldr r0, [sp]
-	cmp r0, 0
-	beq _08035298
-	ldr r1, [r7]
-	lsls r1, 3
-	add r1, r9
-	adds r1, 0x39
-	ldrb r2, [r1]
-	movs r0, 0x4
-	negs r0, r0
-	ands r0, r2
-	strb r0, [r1]
-	ldr r3, [r7]
-	lsls r3, 3
-	add r3, r9
-	movs r1, 0xC
-	ldrsh r2, [r6, r1]
-	mov r4, r10
-	ldr r0, [r4]
-	subs r0, 0x1
-	ldrb r1, [r6, 0x8]
-	muls r0, r1
-	adds r2, r0
-	ldr r1, =0x000001ff
-	adds r0, r1, 0
-	ands r2, r0
-	ldrh r1, [r3, 0x3A]
-	ldr r0, =0xfffffe00
-	ands r0, r1
-	orrs r0, r2
-	strh r0, [r3, 0x3A]
-	b _080352AE
-	.pool
-_08035298:
-	ldr r0, [r7]
-	lsls r0, 3
-	add r0, r9
-	adds r0, 0x39
-	ldrb r2, [r0]
-	movs r1, 0x4
-	negs r1, r1
-	ands r1, r2
-	movs r2, 0x2
-	orrs r1, r2
-	strb r1, [r0]
-_080352AE:
-	add sp, 0x4
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_8035164
-
-	thumb_func_start sub_80352C0
-sub_80352C0: @ 80352C0
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0xC
-	mov r8, r0
-	mov r10, r1
-	str r2, [sp]
-	ldr r5, [r0, 0x14]
-	ldrb r3, [r0, 0x1]
-	movs r0, 0
-	str r0, [sp, 0x4]
-	mov r9, r0
-	cmp r5, 0
-	beq _0803535A
-_080352E0:
-	lsls r0, r3, 3
-	adds r1, r0, 0
-	adds r1, 0x39
-	ldr r2, =gMain
-	adds r7, r1, r2
-	adds r0, 0x3C
-	adds r6, r0, r2
-_080352EE:
-	mov r0, r10
-	adds r1, r5, 0
-	str r3, [sp, 0x8]
-	bl __udivsi3
-	adds r4, r0, 0
-	adds r0, r4, 0
-	muls r0, r5
-	mov r1, r10
-	subs r1, r0
-	mov r10, r1
-	adds r0, r5, 0
-	movs r1, 0xA
-	bl __udivsi3
-	adds r5, r0, 0
-	ldr r3, [sp, 0x8]
-	cmp r4, 0
-	bne _0803531E
-	ldr r2, [sp, 0x4]
-	cmp r2, 0
-	bne _0803531E
-	cmp r5, 0
-	bne _080352E0
-_0803531E:
-	movs r0, 0x1
-	str r0, [sp, 0x4]
-	mov r1, r8
-	ldrb r0, [r1, 0x9]
-	adds r2, r4, 0
-	muls r2, r0
-	ldrh r4, [r1, 0xA]
-	adds r2, r4
-	ldr r1, =0x000003ff
-	adds r0, r1, 0
-	ands r2, r0
-	ldrh r0, [r6]
-	ldr r4, =0xfffffc00
-	adds r1, r4, 0
-	ands r0, r1
-	orrs r0, r2
-	strh r0, [r6]
-	ldrb r0, [r7]
-	movs r2, 0x4
-	negs r2, r2
-	adds r1, r2, 0
-	ands r0, r1
-	strb r0, [r7]
-	adds r7, 0x8
-	adds r6, 0x8
-	adds r3, 0x1
-	movs r4, 0x1
-	add r9, r4
-	cmp r5, 0
-	bne _080352EE
-_0803535A:
-	mov r0, r8
-	ldrb r0, [r0, 0x3]
-	cmp r9, r0
-	bge _0803538A
-	ldr r1, =gMain
-	movs r5, 0x4
-	negs r5, r5
-	movs r4, 0x2
-	lsls r0, r3, 3
-	adds r0, 0x39
-	adds r2, r0, r1
-_08035370:
-	ldrb r1, [r2]
-	adds r0, r5, 0
-	ands r0, r1
-	orrs r0, r4
-	strb r0, [r2]
-	adds r2, 0x8
-	adds r3, 0x1
-	movs r1, 0x1
-	add r9, r1
-	mov r0, r8
-	ldrb r0, [r0, 0x3]
-	cmp r9, r0
-	blt _08035370
-_0803538A:
-	ldr r1, [sp]
-	cmp r1, 0
-	beq _080353B0
-	lsls r0, r3, 3
-	ldr r2, =gMain
-	adds r0, r2
-	adds r0, 0x39
-	ldrb r2, [r0]
-	movs r1, 0x4
-	negs r1, r1
-	ands r1, r2
-	strb r1, [r0]
-	b _080353C6
-	.pool
-_080353B0:
-	lsls r2, r3, 3
-	ldr r4, =gMain
-	adds r2, r4
-	adds r2, 0x39
-	ldrb r1, [r2]
-	movs r0, 0x4
-	negs r0, r0
-	ands r0, r1
-	movs r1, 0x2
-	orrs r0, r1
-	strb r0, [r2]
-_080353C6:
-	add sp, 0xC
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80352C0
-
-	thumb_func_start sub_80353DC
-sub_80353DC: @ 80353DC
-	push {r4-r7,lr}
-	adds r4, r0, 0
-	ldr r0, =gUnknown_02022E10
-	ldr r0, [r0]
-	cmp r0, 0
-	beq _0803546E
-	ldr r2, [r0, 0x4]
-	lsls r1, r4, 3
-	subs r0, r1, r4
-	lsls r0, 2
-	adds r2, r0, r2
-	ldrb r0, [r2]
-	adds r5, r1, 0
-	cmp r0, 0
-	beq _0803546E
-	ldrb r3, [r2, 0x3]
-	adds r0, r3, 0x1
-	ldrb r2, [r2, 0x1]
-	cmp r0, 0
-	beq _08035426
-	ldr r1, =gMain
-	movs r7, 0x4
-	negs r7, r7
-	movs r6, 0x2
-	adds r3, r0, 0
-	lsls r0, r2, 3
-	adds r0, 0x39
-	adds r2, r0, r1
-_08035414:
-	ldrb r1, [r2]
-	adds r0, r7, 0
-	ands r0, r1
-	orrs r0, r6
-	strb r0, [r2]
-	subs r3, 0x1
-	adds r2, 0x8
-	cmp r3, 0
-	bne _08035414
-_08035426:
-	adds r0, r4, 0
-	bl sub_8035570
-	cmp r0, 0
-	bne _08035442
-	ldr r0, =gUnknown_02022E10
-	ldr r0, [r0]
-	ldr r1, [r0, 0x4]
-	subs r0, r5, r4
-	lsls r0, 2
-	adds r0, r1
-	ldrh r0, [r0, 0x10]
-	bl FreeSpriteTilesByTag
-_08035442:
-	adds r0, r4, 0
-	bl sub_80355B4
-	cmp r0, 0
-	bne _0803545E
-	ldr r0, =gUnknown_02022E10
-	ldr r0, [r0]
-	ldr r1, [r0, 0x4]
-	subs r0, r5, r4
-	lsls r0, 2
-	adds r0, r1
-	ldrh r0, [r0, 0x12]
-	bl FreeSpritePaletteByTag
-_0803545E:
-	ldr r0, =gUnknown_02022E10
-	ldr r0, [r0]
-	ldr r1, [r0, 0x4]
-	subs r0, r5, r4
-	lsls r0, 2
-	adds r0, r1
-	movs r1, 0
-	strb r1, [r0]
-_0803546E:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80353DC
-
-	thumb_func_start sub_803547C
-sub_803547C: @ 803547C
-	push {r4-r7,lr}
-	adds r4, r0, 0
-	adds r5, r1, 0
-	ldr r0, =gUnknown_02022E10
-	ldr r1, [r0]
-	adds r7, r0, 0
-	cmp r1, 0
-	beq _0803550C
-	ldr r2, [r1, 0x4]
-	lsls r1, r4, 3
-	subs r0, r1, r4
-	lsls r0, 2
-	adds r2, r0, r2
-	ldrb r0, [r2]
-	adds r6, r1, 0
-	cmp r0, 0
-	beq _0803550C
-	ldrb r3, [r2, 0x3]
-	adds r1, r3, 0x1
-	ldrb r0, [r2, 0x1]
-	cmp r5, 0
-	beq _080354D8
-	cmp r1, 0
-	beq _0803550C
-	ldr r1, =gMain
-	movs r5, 0x4
-	negs r5, r5
-	movs r4, 0x2
-	adds r3, 0x1
-	lsls r0, 3
-	adds r0, 0x39
-	adds r2, r0, r1
-_080354BC:
-	ldrb r1, [r2]
-	adds r0, r5, 0
-	ands r0, r1
-	orrs r0, r4
-	strb r0, [r2]
-	subs r3, 0x1
-	adds r2, 0x8
-	cmp r3, 0
-	bne _080354BC
-	b _0803550C
-	.pool
-_080354D8:
-	cmp r1, 0
-	beq _080354FA
-	ldr r1, =gMain
-	movs r5, 0x4
-	negs r5, r5
-	adds r3, 0x1
-	lsls r0, 3
-	adds r0, 0x39
-	adds r2, r0, r1
-_080354EA:
-	ldrb r1, [r2]
-	adds r0, r5, 0
-	ands r0, r1
-	strb r0, [r2]
-	subs r3, 0x1
-	adds r2, 0x8
-	cmp r3, 0
-	bne _080354EA
-_080354FA:
-	ldr r0, [r7]
-	ldr r1, [r0, 0x4]
-	subs r0, r6, r4
-	lsls r0, 2
-	adds r0, r1
-	ldr r1, [r0, 0x18]
-	adds r0, r4, 0
-	bl sub_8035044
-_0803550C:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_803547C
-
-	thumb_func_start sub_8035518
-sub_8035518: @ 8035518
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	movs r5, 0x40
-	movs r3, 0
-	ldr r0, =gUnknown_02022E10
-	ldr r0, [r0]
-	ldr r2, [r0]
-	cmp r3, r2
-	bcs _0803555A
-	ldr r1, [r0, 0x4]
-_0803552E:
-	ldrb r0, [r1]
-	cmp r0, 0
-	bne _08035548
-	ldrb r0, [r1, 0x1]
-	cmp r0, 0xFF
-	beq _08035552
-	ldrb r0, [r1, 0x3]
-	cmp r0, r4
-	bhi _08035552
-	ldrb r0, [r1, 0x1]
-	b _0803556A
-	.pool
-_08035548:
-	adds r0, r5, 0x1
-	ldrb r5, [r1, 0x3]
-	adds r0, r5
-	lsls r0, 16
-	lsrs r5, r0, 16
-_08035552:
-	adds r1, 0x1C
-	adds r3, 0x1
-	cmp r3, r2
-	bcc _0803552E
-_0803555A:
-	adds r0, r5, r4
-	adds r0, 0x1
-	cmp r0, 0x80
-	bgt _08035568
-	lsls r0, r5, 24
-	lsrs r0, 24
-	b _0803556A
-_08035568:
-	movs r0, 0xFF
-_0803556A:
-	pop {r4,r5}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_8035518
-
-	thumb_func_start sub_8035570
-sub_8035570: @ 8035570
-	push {r4-r6,lr}
-	adds r3, r0, 0
-	movs r2, 0
-	ldr r0, =gUnknown_02022E10
-	ldr r0, [r0]
-	ldr r4, [r0]
-	cmp r2, r4
-	bcs _080355AC
-	ldr r1, [r0, 0x4]
-	lsls r0, r3, 3
-	subs r0, r3
-	lsls r0, 2
-	adds r5, r0, r1
-_0803558A:
-	ldrb r0, [r1]
-	cmp r0, 0
-	beq _080355A4
-	cmp r2, r3
-	beq _080355A4
-	ldrh r0, [r1, 0x10]
-	ldrh r6, [r5, 0x10]
-	cmp r0, r6
-	bne _080355A4
-	movs r0, 0x1
-	b _080355AE
-	.pool
-_080355A4:
-	adds r1, 0x1C
-	adds r2, 0x1
-	cmp r2, r4
-	bcc _0803558A
-_080355AC:
-	movs r0, 0
-_080355AE:
-	pop {r4-r6}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_8035570
-
-	thumb_func_start sub_80355B4
-sub_80355B4: @ 80355B4
-	push {r4-r6,lr}
-	adds r3, r0, 0
-	movs r2, 0
-	ldr r0, =gUnknown_02022E10
-	ldr r0, [r0]
-	ldr r4, [r0]
-	cmp r2, r4
-	bcs _080355F0
-	ldr r1, [r0, 0x4]
-	lsls r0, r3, 3
-	subs r0, r3
-	lsls r0, 2
-	adds r5, r0, r1
-_080355CE:
-	ldrb r0, [r1]
-	cmp r0, 0
-	beq _080355E8
-	cmp r2, r3
-	beq _080355E8
-	ldrh r0, [r1, 0x12]
-	ldrh r6, [r5, 0x12]
-	cmp r0, r6
-	bne _080355E8
-	movs r0, 0x1
-	b _080355F2
-	.pool
-_080355E8:
-	adds r1, 0x1C
-	adds r2, 0x1
-	cmp r2, r4
-	bcc _080355CE
-_080355F0:
-	movs r0, 0
-_080355F2:
-	pop {r4-r6}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_80355B4
-
-	thumb_func_start sub_80355F8
-sub_80355F8: @ 80355F8
-	ldr r2, =gUnknown_082FF1C8
-	lsls r0, 2
-	adds r1, r0
-	adds r1, r2
-	ldrb r0, [r1]
-	bx lr
-	.pool
-	thumb_func_end sub_80355F8
-
-	thumb_func_start sub_8035608
-sub_8035608: @ 8035608
-	push {lr}
-	bl ResetSpriteData
-	ldr r0, =gUnknown_0831AC88
-	movs r1, 0
-	movs r2, 0
-	movs r3, 0
-	bl CreateSprite
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, =gSprites
-	lsls r1, r0, 4
-	adds r1, r0
-	lsls r1, 2
-	adds r1, r2
-	adds r1, 0x3E
-	ldrb r0, [r1]
-	movs r2, 0x4
-	orrs r0, r2
-	strb r0, [r1]
-	ldr r0, =sub_8035648
-	bl SetMainCallback2
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_8035608
-
-	thumb_func_start sub_8035648
-sub_8035648: @ 8035648
-	push {lr}
-	bl AnimateSprites
-	bl BuildOamBuffer
-	pop {r0}
-	bx r0
-	thumb_func_end sub_8035648
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/data/battle_1.s b/data/battle_1.s
deleted file mode 100644
index 37f68bfd6..000000000
--- a/data/battle_1.s
+++ /dev/null
@@ -1,12 +0,0 @@
-
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.section .rodata
-
-	.align 2
-gUnknown_082FF1C8:: @ 82FF1C8
-    .byte 0x01, 0x04, 0x10, 0x40
-    .byte 0x02, 0x04, 0x08, 0x20
-    .byte 0x02, 0x04, 0x08, 0x20
-    .byte 0x00, 0x00, 0x00, 0x00
diff --git a/include/decompress.h b/include/decompress.h
index 34a678cda..e98181c82 100644
--- a/include/decompress.h
+++ b/include/decompress.h
@@ -28,6 +28,6 @@ void LoadSpecialPokePic(const struct CompressedSpriteSheet *src, void *dest, s32
 void LoadSpecialPokePic_2(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality, bool8 isFrontPic);
 void LoadSpecialPokePic_DontHandleDeoxys(const struct CompressedSpriteSheet *src, void *dest, s32 species, u32 personality, bool8 isFrontPic);
 
-u32 sub_8034974(const u8 *ptr);
+u32 GetDecompressedDataSize(const u8 *ptr);
 
 #endif // GUARD_DECOMPRESS_H
diff --git a/include/rom_8034C54.h b/include/rom_8034C54.h
new file mode 100644
index 000000000..9ad84ca13
--- /dev/null
+++ b/include/rom_8034C54.h
@@ -0,0 +1,26 @@
+#ifndef GUARD_ROM_8034C54_H
+#define GUARD_ROM_8034C54_H
+
+struct UnkStruct3
+{
+    u8 field_0_0:2;
+    u8 shape:2;
+    u8 size:2;
+    u8 priority:2;
+    u8 field_1;
+    u8 xDelta;
+    s16 x;
+    s16 y;
+    const struct SpriteSheet *spriteSheet;
+    const struct SpritePalette *spritePal;
+};
+
+bool32 sub_8034C54(u32 count);
+void sub_8034CC8(void);
+bool32 sub_8034D14(u32 id, s32 arg1, const struct UnkStruct3 *arg2);
+void sub_8035044(u32 id, s32 arg1);
+void sub_80353DC(u32 id);
+void sub_803547C(u32 id, bool32 arg1);
+u8 sub_80355F8(u32 arg0, u32 arg1);
+
+#endif // GUARD_ROM_8034C54_H
diff --git a/ld_script.txt b/ld_script.txt
index 6aff24119..6537bdb37 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -60,7 +60,7 @@ SECTIONS {
         src/main_menu.o(.text);
         src/battle_controllers.o(.text);
         src/decompress.o(.text);
-        asm/rom_8034C54.o(.text);
+        src/rom_8034C54.o(.text);
         src/battle_bg.o(.text);
         src/battle_main.o(.text);
         src/battle_util.o(.text);
@@ -371,7 +371,7 @@ SECTIONS {
         data/rom_8011DC0.o(.rodata);
         src/rtc.o(.rodata);
         src/main_menu.o(.rodata);
-        data/battle_1.o(.rodata);
+        src/rom_8034C54.o(.rodata);
         data/data2b.o(.rodata);
         src/battle_main.o(.rodata);
         src/battle_util.o(.rodata);
diff --git a/src/rom_8034C54.c b/src/rom_8034C54.c
index f2fccd606..42df51295 100644
--- a/src/rom_8034C54.c
+++ b/src/rom_8034C54.c
@@ -1,29 +1,15 @@
 #include "global.h"
+#include "rom_8034C54.h"
 #include "malloc.h"
 #include "decompress.h"
 #include "main.h"
 
-struct UnkStruct3
-{
-    u8 field_0_0:2;
-    u8 shape:2;
-    u8 size:2;
-    u8 priority:2;
-    u8 field_1;
-    u8 xDelta;
-    u8 field_3;
-    s16 x;
-    s16 y;
-    const struct SpriteSheet *spriteSheet;
-    const struct SpritePalette *spritePal;
-};
-
 struct UnkStruct2
 {
-    u8 field_0;
-    u8 field_1;
+    bool8 isActive;
+    u8 firstOamId;
     u8 field_2;
-    u8 field_3;
+    u8 oamCount;
     u8 palTagIndex;
     u8 size;
     u8 shape;
@@ -36,31 +22,42 @@ struct UnkStruct2
     u16 tileTag;
     u16 palTag;
     u32 field_14;
-    u8 field_18;
-    u8 field_19;
-    u8 field_1A;
-    u8 field_1B;
+    s32 field_18;
 };
 
 struct UnkStruct1
 {
     u32 count;
-    struct UnkStruct2 *field_4;
+    struct UnkStruct2 *array;
 };
 
-IWRAM_DATA u32 gUnknown_03000DD4;
-IWRAM_DATA u32 gUnknown_03000DD8;
-IWRAM_DATA u32 gUnknown_03000DDC;
-
 extern struct UnkStruct1 *gUnknown_02022E10;
 
+extern const struct SpriteTemplate gUnknown_0831AC88;
+
 // this file's functions
-void sub_8034CC8(void);
-void sub_80353DC(u32 id);
-u8 sub_8035518(u8 arg0);
-u8 sub_80355F8(u32 arg0, u32 arg1);
-void sub_8034EFC(struct UnkStruct2 *arg0);
-void sub_8035044(u32 id, u32 arg1);
+static u8 sub_8035518(u8 arg0);;
+static void sub_8034EFC(struct UnkStruct2 *arg0);
+static void sub_80350B0(struct UnkStruct2 *arg0, s32 arg1, bool32 arg2);
+static void sub_8035164(struct UnkStruct2 *arg0, s32 arg1, bool32 arg2);
+static void sub_80352C0(struct UnkStruct2 *arg0, s32 arg1, bool32 arg2);
+static bool32 SharesTileWithAnyActive(u32 id);
+static bool32 SharesPalWithAnyActive(u32 id);
+static void sub_8035648(void);
+
+// iwram
+static IWRAM_DATA s32 gUnknown_03000DD4;
+static IWRAM_DATA s32 gUnknown_03000DD8;
+static IWRAM_DATA s32 gUnknown_03000DDC;
+
+// const rom data
+static const u8 gUnknown_082FF1C8[][4] =
+{
+    {0x01, 0x04, 0x10, 0x40},
+    {0x02, 0x04, 0x08, 0x20},
+    {0x02, 0x04, 0x08, 0x20},
+    {0x00, 0x00, 0x00, 0x00}
+};
 
 // code
 bool32 sub_8034C54(u32 count)
@@ -74,8 +71,8 @@ bool32 sub_8034C54(u32 count)
     if (gUnknown_02022E10 == NULL)
         return FALSE;
 
-    gUnknown_02022E10->field_4 = Alloc(sizeof(struct UnkStruct2) * count);
-    if (gUnknown_02022E10->field_4 == NULL)
+    gUnknown_02022E10->array = Alloc(sizeof(struct UnkStruct2) * count);
+    if (gUnknown_02022E10->array == NULL)
     {
         Free(gUnknown_02022E10);
         return FALSE;
@@ -84,8 +81,8 @@ bool32 sub_8034C54(u32 count)
     gUnknown_02022E10->count = count;
     for (i = 0; i < count; i++)
     {
-        gUnknown_02022E10->field_4[i].field_0 = 0;
-        gUnknown_02022E10->field_4[i].field_1 |= 0xFF;
+        gUnknown_02022E10->array[i].isActive = FALSE;
+        gUnknown_02022E10->array[i].firstOamId |= 0xFF;
     }
 
     return TRUE;
@@ -95,39 +92,39 @@ void sub_8034CC8(void)
 {
     if (gUnknown_02022E10 != NULL)
     {
-        if (gUnknown_02022E10->field_4 != NULL)
+        if (gUnknown_02022E10->array != NULL)
         {
             u32 i;
 
             for (i = 0; i < gUnknown_02022E10->count; i++)
                 sub_80353DC(i);
 
-            Free(gUnknown_02022E10->field_4);
+            Free(gUnknown_02022E10->array);
         }
 
         FREE_AND_SET_NULL(gUnknown_02022E10);
     }
 }
 
-bool32 sub_8034D14(u32 id, u32 arg1, const struct UnkStruct3 *arg2)
+bool32 sub_8034D14(u32 id, s32 arg1, const struct UnkStruct3 *arg2)
 {
     u32 i;
 
     if (gUnknown_02022E10 == NULL)
         return FALSE;
-    if (gUnknown_02022E10->field_4[id].field_0 != 0)
+    if (gUnknown_02022E10->array[id].isActive)
         return FALSE;
 
-    gUnknown_02022E10->field_4[id].field_1 = sub_8035518(arg2->field_1);
-    if (gUnknown_02022E10->field_4[id].field_1 == 0xFF)
+    gUnknown_02022E10->array[id].firstOamId = sub_8035518(arg2->field_1);
+    if (gUnknown_02022E10->array[id].firstOamId == 0xFF)
         return FALSE;
 
-    gUnknown_02022E10->field_4[id].tileStart = GetSpriteTileStartByTag(arg2->spriteSheet->tag);
-    if (gUnknown_02022E10->field_4[id].tileStart == 0xFFFF)
+    gUnknown_02022E10->array[id].tileStart = GetSpriteTileStartByTag(arg2->spriteSheet->tag);
+    if (gUnknown_02022E10->array[id].tileStart == 0xFFFF)
     {
         if (arg2->spriteSheet->size != 0)
         {
-            gUnknown_02022E10->field_4[id].tileStart = LoadSpriteSheet(arg2->spriteSheet);
+            gUnknown_02022E10->array[id].tileStart = LoadSpriteSheet(arg2->spriteSheet);
         }
         else
         {
@@ -135,63 +132,322 @@ bool32 sub_8034D14(u32 id, u32 arg1, const struct UnkStruct3 *arg2)
 
             compSpriteSheet = *(struct CompressedSpriteSheet*)(arg2->spriteSheet);
             compSpriteSheet.size = GetDecompressedDataSize(arg2->spriteSheet->data);
-            gUnknown_02022E10->field_4[id].tileStart = LoadCompressedObjectPic(&compSpriteSheet);
+            gUnknown_02022E10->array[id].tileStart = LoadCompressedObjectPic(&compSpriteSheet);
         }
 
-        if (gUnknown_02022E10->field_4[id].tileStart == 0xFFFF)
+        if (gUnknown_02022E10->array[id].tileStart == 0xFFFF)
             return FALSE;
     }
 
-    gUnknown_02022E10->field_4[id].palTagIndex = IndexOfSpritePaletteTag(arg2->spritePal->tag);
-    if (gUnknown_02022E10->field_4[id].palTagIndex == 0xFF)
-        gUnknown_02022E10->field_4[id].palTagIndex = LoadSpritePalette(arg2->spritePal);
+    gUnknown_02022E10->array[id].palTagIndex = IndexOfSpritePaletteTag(arg2->spritePal->tag);
+    if (gUnknown_02022E10->array[id].palTagIndex == 0xFF)
+        gUnknown_02022E10->array[id].palTagIndex = LoadSpritePalette(arg2->spritePal);
 
-    gUnknown_02022E10->field_4[id].field_2 = arg2->field_0_0;
-    gUnknown_02022E10->field_4[id].field_3 = arg2->field_1;
-    gUnknown_02022E10->field_4[id].x = arg2->x;
-    gUnknown_02022E10->field_4[id].y = arg2->y;
-    gUnknown_02022E10->field_4[id].shape = arg2->shape;
-    gUnknown_02022E10->field_4[id].size = arg2->size;
-    gUnknown_02022E10->field_4[id].priority = arg2->priority;
-    gUnknown_02022E10->field_4[id].xDelta = arg2->xDelta;
-    gUnknown_02022E10->field_4[id].field_9 = sub_80355F8(arg2->shape, arg2->size);
-    gUnknown_02022E10->field_4[id].tileTag = arg2->spriteSheet->tag;
-    gUnknown_02022E10->field_4[id].palTag = arg2->spritePal->tag;
-    gUnknown_02022E10->field_4[id].field_0 = 1;
-    gUnknown_02022E10->field_4[id].field_14 = 1;
+    gUnknown_02022E10->array[id].field_2 = arg2->field_0_0;
+    gUnknown_02022E10->array[id].oamCount = arg2->field_1;
+    gUnknown_02022E10->array[id].x = arg2->x;
+    gUnknown_02022E10->array[id].y = arg2->y;
+    gUnknown_02022E10->array[id].shape = arg2->shape;
+    gUnknown_02022E10->array[id].size = arg2->size;
+    gUnknown_02022E10->array[id].priority = arg2->priority;
+    gUnknown_02022E10->array[id].xDelta = arg2->xDelta;
+    gUnknown_02022E10->array[id].field_9 = sub_80355F8(arg2->shape, arg2->size);
+    gUnknown_02022E10->array[id].tileTag = arg2->spriteSheet->tag;
+    gUnknown_02022E10->array[id].palTag = arg2->spritePal->tag;
+    gUnknown_02022E10->array[id].isActive = TRUE;
+    gUnknown_02022E10->array[id].field_14 = 1;
 
     for (i = 1; i < arg2->field_1; i++)
-        gUnknown_02022E10->field_4[id].field_14 *= 10;
+        gUnknown_02022E10->array[id].field_14 *= 10;
 
-    sub_8034EFC(&gUnknown_02022E10->field_4[id]);
+    sub_8034EFC(&gUnknown_02022E10->array[id]);
     sub_8035044(id, arg1);
 
     return TRUE;
 }
 
-void sub_8034EFC(struct UnkStruct2 *arg0)
+static void sub_8034EFC(struct UnkStruct2 *arg0)
 {
     u32 i;
-    u32 r5 = arg0->field_1;
+    u32 oamId = arg0->firstOamId;
     u32 x = arg0->x;
-    u32 r8 = arg0->field_3 + 1;
+    u32 oamCount = arg0->oamCount + 1;
 
-    CpuFill16(0, &gMain.oamBuffer[r5], sizeof(struct OamData) * r8);
-    for (i = 0, r5 = arg0->field_1; i < r8; i++, r5++)
+    CpuFill16(0, &gMain.oamBuffer[oamId], sizeof(struct OamData) * oamCount);
+    for (i = 0, oamId = arg0->firstOamId; i < oamCount; i++, oamId++)
     {
-        gMain.oamBuffer[r5].y = arg0->y;
-        gMain.oamBuffer[r5].x = x;
-        gMain.oamBuffer[r5].shape = arg0->shape;
-        gMain.oamBuffer[r5].size = arg0->size;
-        gMain.oamBuffer[r5].tileNum = arg0->tileStart;
-        gMain.oamBuffer[r5].priority = arg0->priority;
-        gMain.oamBuffer[r5].paletteNum = arg0->palTagIndex;
+        gMain.oamBuffer[oamId].y = arg0->y;
+        gMain.oamBuffer[oamId].x = x;
+        gMain.oamBuffer[oamId].shape = arg0->shape;
+        gMain.oamBuffer[oamId].size = arg0->size;
+        gMain.oamBuffer[oamId].tileNum = arg0->tileStart;
+        gMain.oamBuffer[oamId].priority = arg0->priority;
+        gMain.oamBuffer[oamId].paletteNum = arg0->palTagIndex;
 
         x += arg0->xDelta;
     }
 
-    r5--;
-    gMain.oamBuffer[r5].x = arg0->x - arg0->xDelta;
-    gMain.oamBuffer[r5].affineMode = 2;
-    gMain.oamBuffer[r5].tileNum = arg0->tileStart + (arg0->field_9 * 10);
+    oamId--;
+    gMain.oamBuffer[oamId].x = arg0->x - arg0->xDelta;
+    gMain.oamBuffer[oamId].affineMode = 2;
+    gMain.oamBuffer[oamId].tileNum = arg0->tileStart + (arg0->field_9 * 10);
+}
+
+void sub_8035044(u32 id, s32 arg1)
+{
+    bool32 r2;
+
+    if (gUnknown_02022E10 == NULL)
+        return;
+    if (!gUnknown_02022E10->array[id].isActive)
+        return;
+
+    gUnknown_02022E10->array[id].field_18 = arg1;
+    if (arg1 < 0)
+    {
+        r2 = TRUE;
+        arg1 *= -1;
+    }
+    else
+    {
+        r2 = FALSE;
+    }
+
+    switch (gUnknown_02022E10->array[id].field_2)
+    {
+    case 0:
+    default:
+        sub_80350B0(&gUnknown_02022E10->array[id], arg1, r2);
+        break;
+    case 1:
+        sub_8035164(&gUnknown_02022E10->array[id], arg1, r2);
+        break;
+    case 2:
+        sub_80352C0(&gUnknown_02022E10->array[id], arg1, r2);
+        break;
+    }
+}
+
+static void sub_80350B0(struct UnkStruct2 *arg0, s32 arg1, bool32 arg2)
+{
+    u32 r5 = arg0->field_14;
+    u32 oamId = arg0->firstOamId;
+
+    while (r5 != 0)
+    {
+        u32 r4 = arg1 / r5;
+        arg1 -= (r4 * r5);
+        r5 /= 10;
+
+        gMain.oamBuffer[oamId].tileNum = (r4 * arg0->field_9) + arg0->tileStart;
+        oamId++;
+    }
+
+    if (arg2)
+        gMain.oamBuffer[oamId].affineMode = 0;
+    else
+        gMain.oamBuffer[oamId].affineMode = 2;
+}
+
+static void sub_8035164(struct UnkStruct2 *arg0, s32 arg1, bool32 arg2)
+{
+    u32 r5 = arg0->field_14;
+    gUnknown_03000DD4 = arg0->firstOamId;
+    gUnknown_03000DD8 = 0;
+    gUnknown_03000DDC = -1;
+
+    while (r5 != 0)
+    {
+        u32 r4 = arg1 / r5;
+        arg1 -= (r4 * r5);
+        r5 /= 10;
+
+        if (r4 != 0 || gUnknown_03000DDC != -1 || r5 == 0)
+        {
+            gMain.oamBuffer[gUnknown_03000DD4].tileNum = (r4 * arg0->field_9) + arg0->tileStart;
+            gMain.oamBuffer[gUnknown_03000DD4].affineMode = 0;
+
+            if (gUnknown_03000DDC == -1)
+                gUnknown_03000DDC = gUnknown_03000DD8;
+        }
+        else
+        {
+            gMain.oamBuffer[gUnknown_03000DD4].affineMode = 2;
+        }
+
+        gUnknown_03000DD4++;
+        gUnknown_03000DD8++;
+    }
+
+    if (arg2)
+    {
+        gMain.oamBuffer[gUnknown_03000DD4].affineMode = 0;
+        gMain.oamBuffer[gUnknown_03000DD4].x = arg0->x + ((gUnknown_03000DDC - 1) * arg0->xDelta);
+    }
+    else
+    {
+        gMain.oamBuffer[gUnknown_03000DD4].affineMode = 2;
+    }
+}
+
+static void sub_80352C0(struct UnkStruct2 *arg0, s32 arg1, bool32 arg2)
+{
+    u32 r5 = arg0->field_14;
+    u32 oamId = arg0->firstOamId;
+    u32 var_28 = 0;
+    s32 r9 = 0;
+
+    while (r5 != 0)
+    {
+        u32 r4 = arg1 / r5;
+        arg1 -= (r4 * r5);
+        r5 /= 10;
+
+        if (r4 != 0 || var_28 != 0 || r5 == 0)
+        {
+            var_28 = 1;
+            gMain.oamBuffer[oamId].tileNum = (r4 * arg0->field_9) + arg0->tileStart;
+            gMain.oamBuffer[oamId].affineMode = 0;
+
+            oamId++;
+            r9++;
+        }
+    }
+
+    while (r9 < arg0->oamCount)
+    {
+        gMain.oamBuffer[oamId].affineMode = 2;
+        oamId++;
+        r9++;
+    }
+
+    if (arg2)
+        gMain.oamBuffer[oamId].affineMode = 0;
+    else
+        gMain.oamBuffer[oamId].affineMode = 2;
+}
+
+void sub_80353DC(u32 id)
+{
+    s32 oamId, oamCount, i;
+
+    if (gUnknown_02022E10 == NULL)
+        return;
+    if (!gUnknown_02022E10->array[id].isActive)
+        return;
+
+    oamCount = gUnknown_02022E10->array[id].oamCount + 1;
+    oamId = gUnknown_02022E10->array[id].firstOamId;
+
+    for (i = 0; i < oamCount; i++, oamId++)
+        gMain.oamBuffer[oamId].affineMode = 2;
+
+    if (!SharesTileWithAnyActive(id))
+        FreeSpriteTilesByTag(gUnknown_02022E10->array[id].tileTag);
+    if (!SharesPalWithAnyActive(id))
+        FreeSpritePaletteByTag(gUnknown_02022E10->array[id].palTag);
+
+    gUnknown_02022E10->array[id].isActive = FALSE;
+}
+
+void sub_803547C(u32 id, bool32 arg1)
+{
+    s32 oamId, oamCount, i;
+
+    if (gUnknown_02022E10 == NULL)
+        return;
+    if (!gUnknown_02022E10->array[id].isActive)
+        return;
+
+    oamCount = gUnknown_02022E10->array[id].oamCount + 1;
+    oamId = gUnknown_02022E10->array[id].firstOamId;
+    if (arg1)
+    {
+        for (i = 0; i < oamCount; i++, oamId++)
+            gMain.oamBuffer[oamId].affineMode = 2;
+    }
+    else
+    {
+        for (i = 0; i < oamCount; i++, oamId++)
+            gMain.oamBuffer[oamId].affineMode = 0;
+
+        sub_8035044(id, gUnknown_02022E10->array[id].field_18);
+    }
+}
+
+static u8 sub_8035518(u8 arg0)
+{
+    u32 i;
+    u16 oamCount = 64;
+
+    for (i = 0; i < gUnknown_02022E10->count; i++)
+    {
+        if (!gUnknown_02022E10->array[i].isActive)
+        {
+            if (gUnknown_02022E10->array[i].firstOamId != 0xFF && gUnknown_02022E10->array[i].oamCount <= arg0)
+                return gUnknown_02022E10->array[i].firstOamId;
+        }
+        else
+        {
+            oamCount += 1 + gUnknown_02022E10->array[i].oamCount;
+        }
+    }
+
+    if (oamCount + arg0 + 1 > 128)
+        return 0xFF;
+    else
+        return oamCount;
+}
+
+static bool32 SharesTileWithAnyActive(u32 id)
+{
+    u32 i;
+
+    for (i = 0; i < gUnknown_02022E10->count; i++)
+    {
+        if (gUnknown_02022E10->array[i].isActive && i != id
+            && gUnknown_02022E10->array[i].tileTag == gUnknown_02022E10->array[id].tileTag)
+        {
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+static bool32 SharesPalWithAnyActive(u32 id)
+{
+    u32 i;
+
+    for (i = 0; i < gUnknown_02022E10->count; i++)
+    {
+        if (gUnknown_02022E10->array[i].isActive && i != id
+            && gUnknown_02022E10->array[i].palTag == gUnknown_02022E10->array[id].palTag)
+        {
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+u8 sub_80355F8(u32 arg0, u32 arg1)
+{
+    return gUnknown_082FF1C8[arg0][arg1];
+}
+
+static void sub_8035608(void)
+{
+    u8 spriteId;
+
+    ResetSpriteData();
+    spriteId = CreateSprite(&gUnknown_0831AC88, 0, 0, 0);
+    gSprites[spriteId].invisible = 1;
+    SetMainCallback2(sub_8035648);
+}
+
+static void sub_8035648(void)
+{
+    AnimateSprites();
+    BuildOamBuffer();
 }