Shellcracker/Pre-SGW

Shellcracker is a crab-based Badnik model created by Dr. Eggman resembling a gigantic version of Crabmeat.

Appearing During Genesis
A group of Shellcrackers were guarding the Metropolis Zone when Sonic successfully tried to get past them during his mission to get to the core of Eggman's base. (StH: #229)