Mr. Smiley

"A poor brute, former member of the giant race now nothing but a corrupted monster bent on fulfilling its new master's will. Tortured and disfigured beyond recognition, crystals have begun sprouting out of his head. His teeth growing unruly and jagged giving him the expression of a smile...but such an expression is no longer known to him." 

Mr. Smiley is a type of soldier created by an evil wizard, his job is to mainly collect subjects for the wizard's experiements but if his master decides it, he can fly into a rage and decimate anything in his path.