The Gekogekos resembles green frogs.
The Gekogekos only appear in Sunset Hill. In gameplay, the Gekogekos hop back and forth in one place. When its spots the playable character however, it will stick its tongue out periodically in an efforts to damage the player. Watch out for the tongue, and the Gekogeko can be defeated with any attack.
In other media
In the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics, the Gekogekos are robots in Dr. Eggman's Badnik Horde. A group of them first appeared in the comics where they attacked the Freedom Fighters and the Wolf Pack, but got defeated.
- "Geko" is the Japanese ribbit sound.