BFish

BFish
Game: Sonic the Hedgehog 2 (16-bit)

BFish is a scrapped Badnik found in prototype versions of Sonic the Hedgehog 2. Unlike Masher which simply moves up and down, BFish attacks Sonic in an arc-like motion. To destroy the badnik, simply roll or jump into it. The "BFish" name comes from source code found in the Nick Arcade prototype of the game.

BFish is a placable debug object in Hidden Palace Zone (or "Spring Yard Zone", as it's called here) in the Sonic 2 Nick Arcade prototype (along with Gator and Stego). It can also be accessed in the Simon Wai prototype by hacking, though it was removed from the final game altogether.