Caterkiller

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.

Appearance
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.

Archie Comics
After Sonic the Hedgehog arrived in the Marble Zone, he encountered a Caterkiller that attempted to attack him, but the robot was destroyed with a Spin Attack.