Bebop and Rocksteady

Bebop and Rocksteady are a fictional duo of a mutant warthog and mutant rhinoceros that have made appearances as characters in various media releases of the Teenage Mutant Ninja Turtles franchise. The two characters are henchmen who follow the orders of villain and main antagonist of the franchise Shredder, the leader of the Foot Clan. Their names are both derived from genres of music: Bebop is a style of jazz, while Rocksteady is a Jamaican music style, a precursor to reggae.