Space Ranger, Beastie, Robot.
Millions of lightyears in the future, justice (or more dramatically, "space justice") lies in the hands of an elite, inter-species squad of Space Rangers who battle star pirates, inter-dimensional beasties and evil robots. The freedom and livelihood of the good folk of the galaxy depend on the efforts of the Space Rangers, who never stray from the path of righteousness. And who never leave home without a blaster.
Space Ranger Gragnok.
Dangerous beastie or taun taun-esque mount? Or both?
Evil robot overlord.