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- 5th Dimensional Imps - Zrfff is the homeworld of all 5th Dimensional Imps, including Mister Mxyzptlk, Miss Gsptlsnz, Mister Genie (Genro), Quisp, Yzlkz the Thunderbolt, Bat-Mite, Zook, Gazook, and Mopee.
Read more about this topic: List Of Alien Races In DC Comics