Cast
Jay Gragnani
Harold (voice) • 39 episodes
Ramone Hamilton
George (voice) • 39 episodes
Nat Faxon
Pharaoh (voice) • 40 episodes
Nat Faxon
Captain Underpants / Mr. Krupp (voice) • 40 episodes
Evan Kishiyama
Steve 'Gooch' Yamaguchi (voice) • 40 episodes
Evan Kishiyama
Choog (voice) • 40 episodes
Dayci Brookshire
Scoops Blazer (voice) • 42 episodes
Dayci Brookshire
Messica (voice) • 42 episodes
Dayci Brookshire
Jessica / Dressy (voice) • 42 episodes
Sean Astin
TV Caesar / TV Cruelius Sneezer (voice) • 43 episodes
Sean Astin
Teachertrons (voice) • 43 episodes
Sean Astin
Charles Cotesworth Pinckney (voice) • 43 episodes
Sean Astin
Pinches the Purple Penguin (voice) • 43 episodes
Sean Astin
Narrator (voice) • 43 episodes
Jorge Diaz
Snelvin Meedly (voice) • 44 episodes
Jorge Diaz
Ptolemy / Mr. Rected (voice) • 44 episodes
Jorge Diaz
Mr. Rected (voice) • 44 episodes
Jorge Diaz
Melvin (voice) • 44 episodes
Jorge Diaz
Mr. Rected / Cloggernaut (voice) • 44 episodes
Jorge Diaz
Melvin / Melvinborg (voice) • 44 episodes
Peter Hastings
Professor Drool (voice) • 45 episodes
Peter Hastings
Dr. Bagufwind (voice) • 45 episodes
Peter Hastings
Clayzee (voice) • 45 episodes
Peter Hastings
Timely Recollection (voice) • 45 episodes
Peter Hastings
Comic Narrator (voice) • 45 episodes
Peter Hastings
Dr. Blame (voice) • 45 episodes
Peter Hastings
Papa Moneysack (voice) • 45 episodes
Steve-O
Lane Junkston (voice) • 1 episodes
Tress MacNeille
Ms. Hurd / DJ Drowsy Drawers (voice) • 2 episodes
Tress MacNeille
Ms. Hurd (voice) • 2 episodes
David Koechner
Mr. Meaner / Mr. Neamer / Brainy Blabulous (voice) • 6 episodes
David Koechner
Dr. Will Boryew (voice) • 6 episodes
David Koechner
Mr. Meaner (voice) • 6 episodes
David Koechner
Mr. Meaner / Flabby Flabulous (voice) • 6 episodes
David Koechner
Mr. Meaner / Sergeant Boxers (voice) • 6 episodes
Erica Luttrell
Werica Ang (voice) • 8 episodes
Erica Luttrell
Grace Wain (voice) • 8 episodes
Erica Luttrell
Erica / Plungerina (voice) • 8 episodes
Erica Luttrell
Erica (voice) • 8 episodes
Clancy Brown
Mr. Ree (voice) • 4 episodes
Clancy Brown
Mr. Ree / Splotch (voice) • 4 episodes
Patty Mattson
Miss Anthrope / Clogneta (voice) • 6 episodes
Patty Mattson
Miss Anthrope (voice) • 6 episodes
Patty Mattson
Miss Anthrope / Chalice Aristocrab (voice) • 6 episodes
Laraine Newman
Ms. Ribble (voice) • 8 episodes
Laraine Newman
Female Cop (voice) • 8 episodes
Laraine Newman
Dr. Mentor / Ms. Ribble (voice) • 8 episodes
Laraine Newman
Ms. Ribble / Malison Saurus (voice) • 8 episodes
Laraine Newman
Ms. Ribble / Queen Zombee (voice) • 8 episodes
Laraine Newman
Ms. Ribble / Dr. Mentor (voice) • 8 episodes
Maggie Wheeler
Lunch Lady (voice) • 2 episodes
Maggie Wheeler
Ms. Yewh / TP Mummy (voice) • 2 episodes
Eric Bauza
Rap Talkwell (voice) • 3 episodes
Eric Bauza
Robius (voice) • 3 episodes
Eric Bauza
Rap Talkwell / Mr. Gigglenose (voice) • 3 episodes
Maurice LaMarche
Tubbadump (voice) • 1 episodes
Kari Wahlgren
Mayor Hoppy McChapper (voice) • 1 episodes
Stephen Root
Mr. Fyde / Avacadwoe / Hush Muffleman (voice) • 1 episodes
Brennan Murray
Bo Hweemuth / Claylossus (voice) • 1 episodes
Jim Rash
Señor "Jerry" Citizen (voice) • 1 episodes
John DiMaggio
Smelly Socktopus / Suds Latherman (voice) • 1 episodes
Rob Riggle
Theodore "Ted" Murdsly (voice) • 1 episodes
Tudi Roche
Bernice Krupp (voice) • 1 episodes
Trevor Devall
Smartsy Fartsy (voice) • 2 episodes
Kevin Michael Richardson
Diddlysaurus / The Schmoozer (voice) • 3 episodes
Kevin Michael Richardson
George's Dad / Dune Buggy (voice) • 3 episodes
Kevin Michael Richardson
Diddlysaurus / Fingers (voice) • 3 episodes
Paul Rugg
Vert Ladderfeller III / Altitooth / Bivouac Ladderfeller (voice) • 1 episodes
Fred Tatasciore
Keithicus / Rippedicus / Guardicus (voice) • 2 episodes
Lewis Black
Ragely J. Snarlingtooth (voice) • 1 episodes
Fred Tatasciore
Furculees / Chief Hairococha (voice) • 2 episodes
Mindy Sterling
Harold's Mom / Melvin's Mom (voice) • 3 episodes
Mindy Sterling
Melvin's Mom (voice) • 3 episodes
Thomas F. Wilson
Major Messy / Camoflush (voice) • 1 episodes
Dawn Wells
Gumbalina Toothington (voice) • 1 episodes
Toby Huss
Caesar / Cruelius Sneezer (voice) • 1 episodes
Max Koch
Laserlightmare (voice) • 2 episodes
Max Koch
Hank (voice) • 2 episodes
Nolan North
Cash Networth / Salamangler (voice) • 3 episodes
Nolan North
Nanozero / Flash Flood (voice) • 3 episodes
Nolan North
Cash Networth / Lee Dingman (voice) • 3 episodes
Crew
Art
Seunghyun Ko
Storyboard Artist
Andrew Bendik
Storyboard Artist
Jocelan Thiessen
Storyboard Artist
Ryan Hansen
Storyboard Artist
Ian Young
Storyboard Artist
Mik Yung Myung
Storyboard Artist
Lim Ka-hee
Storyboard Artist
Jungbum Yoo
Storyboard Artist
Gustavo Corrales
Storyboard Artist
Paul Cheolsoo Lee
Storyboard Artist
Andrew Murray
Storyboard Artist
Kyoung-Won Yim
Storyboard Artist
Kyung-Soo Lee
Storyboard Artist
Mikyung Myung
Storyboard Artist
Grahaeme Cowie
Storyboard Artist
Seungkyoon Baek
Storyboard Artist
Kyoung-Soo Lee
Storyboard Artist
Derek Moore
Storyboard Artist
Directing
Octavio E. Rodriguez
Director • 8 episodes
Todd Grimes
Director
Kevin Peaty
Director
Seung Woo Cha
Director
Erik Kling
Director
