Card Trivia:Rainbow Overdragon
- This monster is an upgraded Fusion form of "Rainbow Dragon".
- This card's name, "Rainbow Overdragon", is a reference to the attack name of "Rainbow Dragon" in the Japanese version of the Yu-Gi-Oh! GX anime: "Over the Rainbow" (オーバー・ザ・レインボー Ōbā za Reinbō).
- This card has a counterpart: "Ultimate Crystal Rainbow Dragon Overdrive".
- Both are Level 12 Fusion Monsters with 4000 ATK and 0 DEF.
- Both are upgraded forms of "Rainbow Dragon".
- Both require 7 "Crystal Beast" monsters as Fusion Materials; "Ultimate Crystal Rainbow Dragon Overdrive" also requires an "Ultimate Crystal" monster as material.
- This card's name is based on the attack name of "Rainbow Dragon" in the Japanese version of Yu-Gi-Oh! GX, while the name of "Ultimate Crystal Rainbow Dragon Overdrive" is based on the effect name of "Rainbow Dragon", "Rainbow Overdrive" (レインボー・オーバードライブ Reinbō Ōbādoraibu).
- This card is the first Fusion Monster that can Special Summon itself from the Extra Deck without Contact Fusion.