Melvin / Melvinborg (voice) (39 Episodes)

Jessica / Dressy (voice) (39 Episodes)

Narrator (voice) (39 Episodes)

Comic Narrator (voice) (39 Episodes)

Captain Underpants / Mr. Krupp (voice) (39 Episodes)

Harold (voice) (39 Episodes)

George (voice) (39 Episodes)

Steve 'Gooch' Yamaguchi (voice) (16 Episodes)

Erica (voice) (5 Episodes)

Ms. Ribble (voice) (3 Episodes)

Mr. Meaner (voice) (2 Episodes)

Miss Anthrope (voice) (4 Episodes)

Ms. Hurd / DJ Drowsy Drawers (voice) (1 Episodes)

Mr. Ree (voice) (1 Episodes)

Robius (voice) (1 Episodes)

Lane Junkston (voice) (1 Episodes)

Ms. Yewh / TP Mummy (voice) (1 Episodes)

Diddly Saurus / The Schmoozer (voice) (1 Episodes)

Tubbadump (voice) (1 Episodes)

Mayor Hoppy McChapper (voice) (1 Episodes)