The Gaikoko (ガイココ?) is a Badnik that appears in Sonic Labyrinth.
Description
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.
| Playable characters | Sonic | |
| Non-playable characters | Eggman | |
| Zones | Labyrinth of the Sky · Labyrinth of the Sea · Labyrinth of the Factory · Labyrinth of the Castle · Bonus Stage | |
| Enemies | Aroro · Beroro · Dragogo · Flowawa · Gabubu · Gaikoko · Kabutoto · Kibaba · Mukaka · Nyororo · Ototo · Peppepe · Puyoyo · Robototo · Takoko · Toriri · Yadokaka | |
| Bosses | Mecha Gorilla · Kani Pearl · Needle Man · Smiley Bomb | |
| Gimmicks and obstacles | Cannon · Flipper · Iron ball · Spring | |
| Items | Chaos Emerald · Triangle (? Item, 1-Up, Invincible, Power Sneakers, Time Bonus) · Key · Ring | |
| Other | Life · South Island · Slow Down Boots · Super Labyrinth · Spin Attack · Spin Dash · Time Attack · Water | |
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