Rocksteady is a male mutant Rhino. He is a brutish and dim-witted henchman of Shredder. His best friend is Bebop, a mutated warthog. Rocksteady has a mischievous and childish streak, which often leads to him getting into trouble. He obeys Shredder without question. He is incredibly strong and powerful but lacks intelligence or any kind of strategic thinking. Despite his appearance, Rocksteady has a very playful side to him as well.