Gaikoko-spr The Gaikoko (ガイココ?) is a Badnik that appears in Sonic Labyrinth.


Gaikoko is a ghostly skull-type robot that appears out of thin air and hovers slowly along, spouting flame puffs from its jaws. The Gaikoko is invulnerable.


  • Gaikoko's name is derived from "gaikotsu", which means "Skull" in Japanese.
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