- The King (voiced by Lennie Weinrib): Modelled loosely on "The Fonz," a hyped-up lion who leads the motley little crew.
- Big H (voiced by Sheldon Allman): The original Hungry Hungry Hippo, as can be a big pain-in-the-butt thanks to his food fetish.
- Clyde (voiced by Don Messick): The dopey gorilla with athletic pretensions as big as his ego.
- Yuka-Yuka (voiced by Lennie Weinrib): A hyena who wears a porkpie hat and has practical-joker tendencies.
- Skids (voiced by Marvin Kaplan): The jalopy-driving crocodile with a necktie and a bucket on his head.
- Sheena (voiced by Ginny McSwain) and Zelda (voiced by Susan Silo): The crew's cheerleaders, a puma (wearing a sweater with an H featured prominently) and ostrich (wearing a locket on her neck and a bow on her head), respectively. Can be counted on to provide motivation in extremis.
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