Asteron/Pre-SGW

Asteron is a Badnik model created by Dr. Eggman that resembles a starfish.

Appearing During Genesis
A group of Asterons were guarding the Metropolis Zone when Sonic tried to get past them during his mission to get to the core of Eggman's base. Sonic used a meter-wide screw to make progress on his journey and also squash the Asterons to the ceiling. (StH: #229)