Stalker

Stalkers are creatures summoned by Mephiles that serve as opponents in Sonic the Hedgehog (2006).

Description
These monsters are lizard-like creatures that slowly crawl along the ground or walls and attack when one is least expecting. They differ from the Iblis Biters by being stronger, having a purple-black color and a laser attack, which sweeps horizontally as their heads rear up. They retain all of Biters' standard attacks: fire breathing, jumping with claws outstretched or tail lashes. Stalkers have limited defense, taking two hits to destroy.