This character exists primarily or exclusively within the Sonic X continuity. Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
The Caterkiller is a character that appears in the Sonic X comic series published by Archie Comics. It was a digital Badnik model found within a virtual reality world created by Dr. Eggman.
Caterkillers are robots based on caterpillars. They have purple bodies that are adorned with several yellow spikes and posses a grey underbelly. They also have yellow antennas and cheeks as well as sharp fangs.