Rocksteady is a member of the same gang as Bebop.
As Ivan Rocksteed, he is a large, muscular and has a blonde hair with two lines shaved across his temples. He wears a black cargo jacket with shoulder pads that each have two gold spikes on it, a black tank top, green and black camouflage pants and black combat boots.
As Rocksteady, he is a large and bulky humanoid mutant black rhinoceros and wears a black leather bomber hat with the pair of green army goggles on it. After his mutation, he has gears, stars and hammer and sickle tattooed on his right arm and his cargo jacket became a ripped vest. He still wears a tank top and camouflage pants.