The Bumper is an upgraded form of the Smasher. It is a good body damage build. unlike the Smasher, it has one turret that retracts if you go into Auto Spin mode. It
The Bumper looks like the Smasher, although with 1 turret. in Auto Spin mode, it looks more like a circle due to the fact that it goes so fast. DO NOT let your guard down, as it deals considerable damage and knockback and can kill you quickly.
As the Bumper:
Knock them back, then hit them again before they can recover.
Against the Bumper:Circle it while shooting. DO NOT get hit.