This location exists primarily or exclusively within the Sonic the Comic continuity.
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
Not to be confused with Gremlyn the robot.
Planet Gremlyn

Planet Gremlyn is a location that appears in the Sonic the Comic series published by Fleetway Editions. It is home to the Ultragem.


With the Ultragem hidden safely away in Castle Grimm, Amy Rose and Tekno reached it through the Eternity Ring. It is located in a distant galaxy and appeared in STC #152 and #153.

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