Bebop and Rocksteady

Bebop and Rocksteady are a fictional supervillain duo of mutants who 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 (a mutant warthog) is a style of jazz, while Rocksteady (a mutant rhinoceros) is a Jamaican music style, a precursor to reggae.

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 * Bebop and Rocksteady appear as guest antagonists in Marvel's Spider-Man: Webbed Champion, voiced by Phil LaMarr and Fred Tatasciore respectively. Appearing in "Legendary Universes, Part 5: Of Spiders and Turtles", the duo act as henchmen for the Spider-Emperor in his Animal Clan, although in the end, they are revealed to have been brainwashed by him. Bebop and Rocksteady are then freed from the Spider-Emperor's brainwashing after he is defeated by the Ninja Turtles and Spider-Man and his team, but are then captured and sent to prison.
 * Bebop and Rocksteady return in the show's Disney+ sequel miniseries Marvel's All-Star Multiverse, voiced again by Phil LaMarr and Fred Tatasciore respectively.