Beat (Badnik)

E-22 Beat is an E-Series robot from the game Sonic Adventure.

Description
It resembles a crab, and appears in Sonic's story in the level Final Egg. Very large amounts are generated in certain rooms, where they all swarm Sonic and self-destruct on impact.

Trivia

 * E-22 Beat, along with E-29 Egg Pirate, is the only Badnik in the game that doesn't run off an organic battery.