Card Trivia:Metalmorph
- This card has a counterpart known as "Rare Metalmorph".
- In the Premium Pack 1 Alternate Art print of this card, the armour has two pairs of eyes, while the old artwork only had one. Also, its claws and shape are different.
- Two cards -- "Red-Eyes Black Metal Dragon" and "Metalzoa" -- cannot be summoned unless this card is used.
- Although they are released in the TCG, there is another, Anime-only, monster called "Heavy Metal King", which is a "metallized" "Musician King".
- In Yu-Gi-Oh! The Sacred Cards, this card is a Spell Card.
- In episode 031 this card is named "Magic Metal Force".