Comic Narrator (voice) / Garg (voice)
Narrator (voice) / Abraham Lincoln (voice)
Captain Underpants / Mr. Krupp (voice) / Captain Pandernuts / Purpk (voice)
Harold (voice) / Dohlar (voice)
George (voice) / Greego (voice)
Moxie Swaggerman / Hailey Comett (voice) / Moxie Swaggerman / Xemio (voice)
Sqworg (voice) / Mr. Meaner / Mr. Nearme (voice)
Dr. Shifty Fitzgibbons / Jett Wingman (voice) / Dr. Shifty Fitzgibbons / Jett Wingman / Itsius (voice)
Dupe Licitous (voice)
Livmen / Stewart / Statrew (voice)
Arice (voice)
Elbrib (voice)
