Crystal Beast", originally named and known as "
Gem Beast" (宝玉獣(ほうぎょくじゅう)
Hōgyokujū) in Japan, is an
archetype of seven
Level 3-4
monsters with various
Attributes (primarily
EARTH and
WIND) and
Types (primarily
Beast) that all share the same
effect of becoming
Continuous Spell Cards upon their destruction. Although they have low
ATK and
DEF, their aforementioned effects allow them to have great staying power. They are also
supported by many cards as Continuous Spell Cards. When all 7 Crystals are either on the
field or in the
Graveyard, their boss monster, "
Rainbow Dragon", can be Summoned. This archetype also contains one of the most powerful
OTK setups with "
Crystal Abundance", as well as sturdy control with the five effects of their
Field Spell Card "
Ancient City - Rainbow Ruins".
The "Crystal Beasts" made their first appearance in the
Yu-Gi-Oh! GX anime, used by
Jesse Anderson. In the English dub, each of the "Crystal Beast" monsters, except "
Ruby Carbuncle", imitates the voice of a real life movie celebrity. Upgraded forms known as the "
Advanced Crystal Beasts" were used in the anime, although they have not been released in the
TCG or
OCG.
In
Secrets of Eternity (OCG only) the archetype received support in the form of Pendulum Monsters.