The Bull is a quad-pump action shotgun, that fires energy pellets equivalent to HE shotgun pellets. It has the recoil of a bull, so it takes a couple of seconds between each shot to line the shot back up. Each of its four barrels shoots a pellet simultaneously when the trigger is pulled, and each barrel is reloaded at the same time. The Bull's barrels can each shoot four times before it needs a one post reload.

The Bull was used at different points by Omega to be taking out Guards, SFs and Black Ops as well as Scientists along with the Closer, but the Bull was damaged beyond repair against XV.

It appears in Xionic Madness 2.