Were you looking for Metalman's weaker counterpart, Chop 'N Roll?
Metalman is one of several enemies encountered in FNaF World. It is encountered in Choppy's Woods. It also makes an appearance in the FNaF 57: Freddy in Space as an enemy.
Metalman's appearance is similar to Chop 'N Roll, but with some changes to both its movement and look. Metalman has spikes along the edges of its wheel base and its whole body is colored silver chrome. Metalman rolls forward and backward slightly but quickly on its base, swinging its axes and shaking its head in a violent way, more so than its counterpart. However, in FNaF 57: Freddy in Space, Metalman has a pair of gun barrels in place of its forearms instead.