Card Trivia:Rainbow Neos
- This card is the second strongest Level 10 monster in the TCG, behind "Machina Force".
- This card is currently the only card that is a Ghost/Holographic Rare that isn't a Cover Card for a booster.
- This card along with "Elemental Hero Divine Neos" and "Elemental Hero Neos Knight" are the only Neos Fusion monsters that can't be Summoned via Contact Fusion.
- This card's ATK rivals the "Blue-Eyes Ultimate Dragon", tying them for third-highest fixed ATK in the OCG/TCG.
- In the anime, it is shown that this card is a giant compared to most other monsters.
- Many people wonder why you can't use "Elemental Hero Prisma" or similar effects to substitute either "Rainbow Dragon" or "Rainbow Dark Dragon". This could be the reason: while TCG versions of this card specifically list Elemental Hero Neos + Rainbow Dragon OR Rainbow Dark Dragon, the OCG card lists Elemental Hero Neos + 1 monster that includes "Ultimate Gem God" in its card name. Much like "Chimeratech Overdragon" or "Five-Headed Dragon", you cannot select one of them and send one random machine or dragon type monster from your deck to the graveyard since it isn't specified on that card. In this case, the interpretation and/or translation wasn't errata'd to reflect the actual rules of this card thus leading to this misunderstanding.
- One could argue that this means "Rainbow Neos" has different Fusion Material Monsters in the OCG than the TCG, making it the only monster as such.
- Its Field Clearing effect is partly similar to that of "Rainbow Dragon", but it only returns the opponent's cards from the field to the owner's deck.
- This Card is somewhat of a Prototype for the Gem-Knights that are later released in Duel Terminal - Vylon Descends!!, due to the fact that this monster resembles a Warrior powered by gems.
- This card, like "Dragon Master Knight", are both LIGHT Fusion Monsters and have Fusion Material Monsters as a rival character's Special Summon-only Dragon Monster plus the main character's strongest non-Effect Warrior Monster.
- Much like "Neos Wiseman" symbolizes Jaden Yuki's bond with Yubel, this card may indeed symbolize his friendship with Jesse Anderson. Therefore this card is called 'Protector of Bonds'.
- This card's effect is similar to that of the "Temporal Machine Gods" used by Z-one.