- "Metalmorph" has two different artworks featuring the metal with slightly different details, in different positions, and with different backgrounds.
- In Yu-Gi-Oh! Duel Monsters II: Dark duel Stories, Yu-Gi-Oh! Dark Duel Stories and Yu-Gi-Oh! Duel Monsters 4: Battle of Great Duelist, "Metalmorph" was drawn with a different artwork.