List of unseen cards

This page lists cards that are known to exist, but which have not been shown in any Yu-Gi-Oh! media.

"Ojamachine Green" and "Ojamachine Black"
These two cards are mentioned in the effect of "Mecha Ojama King." Nothing is known about them, apart from the fact that they can be Summoned by the effect of "Mecha Ojama King."

"Bishop" and "Knight"
These cards are mentioned in the effect text of "Promotion" as cards that can be Summoned with that card's effect by Tributing a "Puppet Pawn." Their names are presumably prefixed by "Puppet," though this is not stated on the card.

"Mystic Baby Knight" and "Mystic Baby Magician"
These two cards are mentioned in the effect of "Mystic Revolution" as monsters that can be Tributed for the effect of "Mystic Revolution."

Colorless, Chaos King of Dark World
"Colorless, Chaos King of Dark World" is mentioned by Brron during his duel with Jaden Yuki as a monster that Brron intends to Summon with the effect of "Super Polymerization." Apart from that it is apparently a Fusion Monster, nothing is known about it, as Brron failed to complete the "Wicked Canon" to activate "Super Polymerization."

Super Fusion God
"Super Fusion God" is mentioned as a monster Yubel intends to Summon to unite the twelve Duel Spirit Dimensions into one. Yubel uses "Super Polymerization" and "Chain Material" to fuse one monster of each Level from 1 to 12 into this monster, but Jaden chains Spiritual Fusion, fusing Yubel and himself instead.