Zero
Zero was a new civilization introduced in DMR-05 Episode 2: Golden Age. They are not a civilization, so much as a lack of civilization. Players don't need to tap Zero cards in the mana zone to use Zero cards. They are represented by a crystal like six-headed star symbol in their mana number. There are some cards in the Japanese OCG that do not belong to a certain civilization. For example, Aqua Holy is a pure-light Liquid People. It means that races are not always limited to specific civilizations. There are some races that belongs to more than one civilization. They are: Aliens, Arc Seraphims, Brave Spirits, Deep Marines, Dreammates, Dynamos, Eggs, Grand Devils, Great Mecha Kings, Gods, Hunters, Knights, Lunatic Emperors, Luna's Sun Kaisers, Machine Heros, Origins, Phoenixes, Saint Heads, Samurais, Shinobis, Survivors, Tyranno Drakes, Unknowns, Unnoises and Vehicle Bees.
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