"Utopia", known as "King of Wishes, Hope" (希（き）望（ぼう）皇（おう）ホープ Kibō'ō Hōpu) in Japan, is an archetype associated with the "Number" archetype. It is a sub-archetype of the "Utopic" archetype. They are used by Yuma Tsukumo and Astral as their signature cards in the anime, and are supported by cards in the "ZW -" archetype. "Utopian Aura" and "Utopia Buster" are not "Utopia" cards because they do not have 「希（き）望（ぼう）皇（おう）ホープ」 in their Japanese names.