Ultimate Crystal

"Ultimate Gem God" ( Kyūkyoku Hōgyokushin) is a small archetype of cards used by Jesse Anderson in the Yu-Gi-Oh! GX anime that support the "Crystal Beast" monsters. The only members of this archetype are "Rainbow Dragon" and "Rainbow Dark Dragon", both of which have "Ultimate Gem God" in their Japanese names.

The English lores of this archetype's support cards were changed to specifically mention the names of the archetype's two members, rather than word it as archetype support.