Ryusei

Ryusei are an archetype of Red Command Dragon / Hunter / Alien creatures primarily in the Fire Civilization that first appeared in DMR-02 Episode 1: Dark Side.

Details
With the exception of Fire/Nature, there is a card that has Ryusei in its name from every possible 2-civilization combination with the Fire civilization (LF, WF, DF).

Anime
This creature is the card form of the Dragon Ryu character. He protects Prin Prin.

List of Ryusei cards
DMR-02 Episode 1: Dark Side
 * Eternal Meteor Kaiser

DMR-03 Episode 1: Gaial Victory
 * Forever Meteor Kaiser / Gaial Meteor Dragon, Star Dragon King

DMR-04 Episode 1: Rising Hope
 * Victorious Meteor Kaiser

DMR-07 Episode 2: Golden Dragon
 * Destiny Meteor of Fate

DMR-09 Episode 3: Rage vs God
 * Diehard Ryusei of Invincibility

DMR-11 Episode 3: Ultra Victory Master
 * Meteorite Ryusei the Flash

DMR-12 Episode 3: Omega Climax
 * Ryusei, the End of Conclusion

DMX-15 Full Foil VS Pack: Virtueless Royal
 * Ryusei, Ex Revolver

'''DMX-16 The Great Royal Strategies: Fantasista 12
 * Ryusei In The Dark

Related Cards
 * DMR-05 — Of Course Kaiser "Dragon"
 * DMR-10 — Forever Meteor, Matchless Dragonmech

Support
During Episode 2 and Episode 3, no card referred to the Prin series of cards until Ryusei, the End of Conclusion, 10 booster sets after the initial release of the original Eternal Meteor Kaiser.