>>717558197
Walruses' got strength and muscle enough on their flippers, dorsal "tailed" ones included, to walk quadruped over plain seals miserably hopping on their bellies, so the artist figured applying that trivia on Rotor and his lower body, in a form through toon logic base, his legs can be drawn and reshaped sightly standing legs, "squatting" raptor knees or underwater winding forming "tail" for giving Rotor the iconic form of a walrus swimming through.

>>717560534
Rotor is a man, though. Being "ugly bastard" is part of testosterone and attractiveness.

>>717560616
Mind you, that's his most recognizable self.