diff --git a/constants/gfx_constants.asm b/constants/gfx_constants.asm
index 6446a51f..d6d162c7 100644
--- a/constants/gfx_constants.asm
+++ b/constants/gfx_constants.asm
@@ -29,3 +29,14 @@ TRANSFERBOTTOM EQU 2
 ; hRedrawRowOrColumnMode
 REDRAW_COL EQU 1
 REDRAW_ROW EQU 2
+
+; tile list ids
+	const_def
+	const TILEMAP_MON_PIC
+	const TILEMAP_SLIDE_DOWN_MON_PIC_7X5
+	const TILEMAP_SLIDE_DOWN_MON_PIC_7X3
+	const TILEMAP_GENGAR_INTRO_1
+	const TILEMAP_GENGAR_INTRO_2
+	const TILEMAP_GENGAR_INTRO_3
+	const TILEMAP_GAME_BOY
+	const TILEMAP_LINK_CABLE
diff --git a/data/tilemaps.asm b/data/tilemaps.asm
index 7bf3d9f8..c7efb222 100644
--- a/data/tilemaps.asm
+++ b/data/tilemaps.asm
@@ -4,48 +4,31 @@ tile_ids: MACRO
 ENDM
 
 TileIDListPointerTable:
+; entries correspond to TILEMAP_* constants (see constants/gfx_constants.asm)
 	; tilemap pointer, width, height
-	tile_ids Unknown_79b24,      7,  7
-	tile_ids Unknown_79b55,      7,  5
-	tile_ids Unknown_79b78,      7,  3
-	tile_ids GengarIntroTiles1,  7,  7
-	tile_ids GengarIntroTiles2,  7,  7
-	tile_ids GengarIntroTiles3,  7,  7
-	tile_ids GameBoyTiles,       6,  8
-	tile_ids LinkCableTiles,    12,  3
+	tile_ids MonTiles,               7,  7
+	tile_ids SlideDownMonTiles_7x5,  7,  5
+	tile_ids SlideDownMonTiles_7x3,  7,  3
+	tile_ids GengarIntroTiles1,      7,  7
+	tile_ids GengarIntroTiles2,      7,  7
+	tile_ids GengarIntroTiles3,      7,  7
+	tile_ids GameBoyTiles,           6,  8
+	tile_ids LinkCableTiles,        12,  3
 
 DownscaledMonTiles_5x5:
-	db $31,$38,$46,$54,$5B
-	db $32,$39,$47,$55,$5C
-	db $34,$3B,$49,$57,$5E
-	db $36,$3D,$4B,$59,$60
-	db $37,$3E,$4C,$5A,$61
+	INCBIN "gfx/pokemon/downscaled_5x5.tilemap"
 
 DownscaledMonTiles_3x3:
-	db $31,$46,$5B
-	db $34,$49,$5E
-	db $37,$4C,$61
+	INCBIN "gfx/pokemon/downscaled_3x3.tilemap"
 
-Unknown_79b24:
-	db $00,$07,$0E,$15,$1C,$23,$2A
-	db $01,$08,$0F,$16,$1D,$24,$2B
-	db $02,$09,$10,$17,$1E,$25,$2C
-	db $03,$0A,$11,$18,$1F,$26,$2D
-	db $04,$0B,$12,$19,$20,$27,$2E
-	db $05,$0C,$13,$1A,$21,$28,$2F
-	db $06,$0D,$14,$1B,$22,$29,$30
+MonTiles:
+	INCBIN "gfx/pokemon/front.tilemap"
 
-Unknown_79b55:
-	db $00,$07,$0E,$15,$1C,$23,$2A
-	db $01,$08,$0F,$16,$1D,$24,$2B
-	db $03,$0A,$11,$18,$1F,$26,$2D
-	db $04,$0B,$12,$19,$20,$27,$2E
-	db $05,$0C,$13,$1A,$21,$28,$2F
+SlideDownMonTiles_7x5:
+	INCBIN "gfx/pokemon/slide_down_7x5.tilemap"
 
-Unknown_79b78:
-	db $00,$07,$0E,$15,$1C,$23,$2A
-	db $02,$09,$10,$17,$1E,$25,$2C
-	db $04,$0B,$12,$19,$20,$27,$2E
+SlideDownMonTiles_7x3:
+	INCBIN "gfx/pokemon/slide_down_7x3.tilemap"
 
 GengarIntroTiles1:
 	INCBIN "gfx/intro_credits/gengar_1.tilemap"
diff --git a/engine/battle/animations.asm b/engine/battle/animations.asm
index eac523a3..dae13ba0 100755
--- a/engine/battle/animations.asm
+++ b/engine/battle/animations.asm
@@ -1148,7 +1148,7 @@ AnimationSlideMonUp:
 
 AnimationSlideMonDown:
 ; Slides the mon's sprite down out of the screen.
-	xor a
+	xor a ; TILEMAP_MON_PIC
 	call GetTileIDList
 .loop
 	call GetMonSpriteTileMapPointerFromRowCount
@@ -1355,7 +1355,7 @@ AnimationFlashEnemyMonPic:
 	jp CallWithTurnFlipped
 
 AnimationShowMonPic:
-	xor a
+	xor a ; TILEMAP_MON_PIC
 	call GetTileIDList
 	call GetMonSpriteTileMapPointerFromRowCount
 	call CopyPicTiles
@@ -1379,7 +1379,7 @@ AnimationShakeBackAndForth:
 	decoord 13, 0
 
 .next
-	xor a
+	xor a ; TILEMAP_MON_PIC
 	ld c, $10
 .loop
 	push af
@@ -1424,7 +1424,7 @@ AnimationMoveMonHorizontally:
 	jr z, .next
 	hlcoord 11, 0
 .next
-	xor a
+	xor a ; TILEMAP_MON_PIC
 	push hl
 	call GetTileIDList
 	pop hl
@@ -1715,8 +1715,8 @@ MinimizedMonSpriteEnd:
 
 AnimationSlideMonDownAndHide:
 ; Slides the mon's sprite down and disappears. Used in Acid Armor.
-	ld a, $1
-	ld c, $2
+	ld a, TILEMAP_SLIDE_DOWN_MON_PIC_7X5
+	ld c, 2
 .loop
 	push bc
 	push af
@@ -1735,7 +1735,7 @@ AnimationSlideMonDownAndHide:
 	jr nz, .loop
 	call AnimationHideMonPic
 	ld hl, wTempPic
-	ld bc, $310
+	ld bc, 7 * 7 tiles
 	xor a
 	call FillMemory
 	jp CopyTempPicToMonPic
@@ -2007,7 +2007,7 @@ ChangeMonPic:
 	ld [wd0b5], a
 	call GetMonHeader
 	predef LoadMonBackPic
-	xor a
+	xor a ; TILEMAP_MON_PIC
 	call GetTileIDList
 	call GetMonSpriteTileMapPointerFromRowCount
 	call CopyPicTiles
diff --git a/engine/movie/hall_of_fame.asm b/engine/movie/hall_of_fame.asm
index 071e7ca1..a7d3ed40 100755
--- a/engine/movie/hall_of_fame.asm
+++ b/engine/movie/hall_of_fame.asm
@@ -202,7 +202,7 @@ HoFLoadPlayerPics:
 
 HoFLoadMonPlayerPicTileIDs:
 ; c = base tile ID
-	ld b, 0
+	ld b, TILEMAP_MON_PIC
 	hlcoord 12, 5
 	predef_jump CopyTileIDsFromList
 
diff --git a/engine/movie/intro.asm b/engine/movie/intro.asm
index c5896ecb..d8ec8e6e 100755
--- a/engine/movie/intro.asm
+++ b/engine/movie/intro.asm
@@ -1,15 +1,10 @@
-const_value = -1
+	const_def -1
 	const MOVE_NIDORINO_RIGHT
 	const MOVE_GENGAR_RIGHT
 	const MOVE_GENGAR_LEFT
 
 ANIMATION_END EQU 80
 
-const_value = 3
-	const GENGAR_INTRO_TILES1
-	const GENGAR_INTRO_TILES2
-	const GENGAR_INTRO_TILES3
-
 PlayIntro:
 	xor a
 	ldh [hJoyHeld], a
@@ -34,7 +29,7 @@ PlayIntroScene:
 	ldh [rOBP1], a
 	xor a
 	ldh [hSCX], a
-	ld b, GENGAR_INTRO_TILES1
+	ld b, TILEMAP_GENGAR_INTRO_1
 	call IntroCopyTiles
 	ld a, 0
 	ld [wBaseCoordX], a
@@ -77,7 +72,7 @@ PlayIntroScene:
 	ret c
 
 ; raise
-	ld b, GENGAR_INTRO_TILES2
+	ld b, TILEMAP_GENGAR_INTRO_2
 	call IntroCopyTiles
 	ld a, SFX_INTRO_RAISE
 	call PlaySound
@@ -88,7 +83,7 @@ PlayIntroScene:
 	ret c
 
 ; slash
-	ld b, GENGAR_INTRO_TILES3
+	ld b, TILEMAP_GENGAR_INTRO_3
 	call IntroCopyTiles
 	ld a, SFX_INTRO_CRASH
 	call PlaySound
@@ -107,7 +102,7 @@ PlayIntroScene:
 
 	lb de, 8 / 2, MOVE_GENGAR_LEFT
 	call IntroMoveMon
-	ld b, GENGAR_INTRO_TILES1
+	ld b, TILEMAP_GENGAR_INTRO_1
 	call IntroCopyTiles
 	ld c, 60
 	call CheckForUserInterruption
diff --git a/engine/movie/trade.asm b/engine/movie/trade.asm
index fc2da9bd..992cbd97 100755
--- a/engine/movie/trade.asm
+++ b/engine/movie/trade.asm
@@ -282,7 +282,7 @@ Trade_DrawOpenEndOfLinkCable:
 	ld a, %10001011
 	ldh [rLCDC], a
 	hlcoord 6, 2
-	ld b, $7 ; open end of link cable tile ID list index
+	ld b, TILEMAP_LINK_CABLE
 	call CopyTileIDsFromList_ZeroBaseTileID
 	call Trade_CopyTileMapToVRAM
 	ld a, SFX_HEAL_HP
@@ -474,7 +474,7 @@ Trade_DrawLeftGameboy:
 
 ; draw gameboy pic
 	hlcoord 5, 3
-	ld b, $6
+	ld b, TILEMAP_GAME_BOY
 	call CopyTileIDsFromList_ZeroBaseTileID
 
 ; draw text box with player name below gameboy pic
@@ -521,7 +521,7 @@ Trade_DrawRightGameboy:
 
 ; draw gameboy pic
 	hlcoord 7, 8
-	ld b, $6
+	ld b, TILEMAP_GAME_BOY
 	call CopyTileIDsFromList_ZeroBaseTileID
 
 ; draw text box with enemy name above link cable
diff --git a/gfx/pokemon/downscaled_3x3.tilemap b/gfx/pokemon/downscaled_3x3.tilemap
new file mode 100644
index 00000000..885f4a55
Binary files /dev/null and b/gfx/pokemon/downscaled_3x3.tilemap differ
diff --git a/gfx/pokemon/downscaled_5x5.tilemap b/gfx/pokemon/downscaled_5x5.tilemap
new file mode 100644
index 00000000..bc99ac23
Binary files /dev/null and b/gfx/pokemon/downscaled_5x5.tilemap differ
diff --git a/gfx/pokemon/front.tilemap b/gfx/pokemon/front.tilemap
new file mode 100644
index 00000000..2f3cb316
Binary files /dev/null and b/gfx/pokemon/front.tilemap differ
diff --git a/gfx/pokemon/slide_down_7x3.tilemap b/gfx/pokemon/slide_down_7x3.tilemap
new file mode 100644
index 00000000..9976218b
Binary files /dev/null and b/gfx/pokemon/slide_down_7x3.tilemap differ
diff --git a/gfx/pokemon/slide_down_7x5.tilemap b/gfx/pokemon/slide_down_7x5.tilemap
new file mode 100644
index 00000000..c82337fe
Binary files /dev/null and b/gfx/pokemon/slide_down_7x5.tilemap differ