Zorak is a mantis (sometimes a locust) who used to be one of space ghost's arch-vile enemies (of course, he still is). Now, he is the band leader on the Ghost's talk show Space Ghost: Coast to Coast and his prisoner on Cartoon Planet. Zorak is always trying to take over the show, and often almost succeeds.

Moltar is Zorak's partner in crime, and the director of Space Ghost: Coast to Coast. He is at home where the air is hot and the rocks are molten. Moltar usually helps Zorak with the evil plots to take over the show. He also handles the feeds for the interviews and the commercial breaks. Moltar was once kidnapped by the diabolical criminal, Your Mother. Zorak then became Batmantis, and didn't do much to help Space Ghost get Moltar back.

Brak is...well, Brak is not exactly the brightest thing on Cartoon Planet...heck, Brak wouldn't be the brightest thing in a black hole :P Brak is the other villain on Cartoon Planet. However, whilst running from Space Ghost in one of the episodes of the old cartoon, he flew his spaceship right through the "Pirranha-Mites", after which he kind of lost his marbles. He is no longer evil, so to say. He is basically there for comic relief, and not much more.