What is brack and zorak?

Brak and Zorak are fictional characters from the animated television series Space Ghost Coast to Coast. Brak is a green cat-like creature who often acts as the comic relief in the show and regularly breaks into song. Zorak is a mantis-like creature who serves as Space Ghost's arch-nemesis and the bandleader of the show's house band, The Original Way-Outs. Both characters have become fan favorites and have appeared in various spin-off shows and media over the years.