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- Courtenay Taylor as KO
- Ashly Burch as Enid
- Ian Jones-Quartey as Rad / Crinkly Wrinkly / Frat Boi 2
- Robbie Rist as Gnarlio / Frat Boi / Corn Shepard
- Kath Soucie as Peej / Gnarlio Jr.
- Kari Wahlgren as Chill Cat / Tumbles / Mrs. Gnarlio
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- One of the cool pests, Gnarlio bares a resemblance to Mondo Gecko from Teenage Mutant Ninja Turtles. Ironically enough, both share the same voice actor.