- This monster is the cover card for Tactical Evolution.
- Rarity:
- This card was the first Holographic Rare to be released in the OCG.
- This card was the first Ghost Rare to be released in the TCG.
- Some prints of the Unlimited Edition of the Ghost Rare version of this card were misprinted with the picture "Elemental HERO Chaos Neos", and some prints of the 1st Edition Ghost Rare version of "Chaos Neos" were misprinted with the name of this card.
- In the OCG version of Duelist Pack: Jesse Anderson, this card was reprinted as a Rare, but was excluded in the TCG version.
- This monster appears in the artworks of "Rainbow Path", "Rainbow Refraction", "Awakening of the Crystal Ultimates", "Rainbow Bridge of Salvation", and "Rainbow Bridge of the Heart".
- This monster has many counterparts.
- A pre-evolution: "Crystal Beast Rainbow Dragon"
- A Dark counterpart: "Rainbow Dark Dragon"
- A "Malefic" counterpart: "Malefic Rainbow Dragon"
- Two evolved Fusion Monster counterparts: "Rainbow Overdragon" and "Ultimate Crystal Rainbow Dragon Overdrive"
- This monster represents a rainbow because the seven "Crystal Beasts" each correspond to a color of the rainbow.
- "Crystal Beast Ruby Carbuncle" = red
- "Crystal Beast Amber Mammoth" = orange
- "Crystal Beast Topaz Tiger" = yellow
- "Crystal Beast Emerald Tortoise" = green
- "Crystal Beast Sapphire Pegasus" = blue
- "Crystal Beast Cobalt Eagle" = indigo
- "Crystal Beast Amethyst Cat" = violet
- This is the Ace monster of Jesse Anderson.
- In the anime, much like how "Elemental HERO Divine Neos" requires "Elemental HERO Neos" and all the "Neo-Spacians" to be summoned, this card requires all seven "Crystal Beasts" to be successfully summoned.
- This card's Japanese attack name, "Over the Rainbow", is a reference to the book, The Wizard of Oz.