Asteron (テルスター - Terusutā)
Games- Sonic 2 (MD)
Levels- Metropolis Zone
Boss Type- Badnik
Description-
Asterons are often found waiting inside walls where they will wait until a Target comes close and they start there count down. Much like the Oringal Bombs, they will blow up but this time sending 5 spikes out to hit anything in their way.