Rob Paulsen
Carl Wheezer (voice) (76 Episodes), Butch / Principal Willoughby (voice) (7 Episodes), Principal Willoughby (voice) (5 Episodes), Butch (voice) (3 Episodes), Carl's Dad / Carl's Mom (voice) (2 Episodes), Waiter (voice) (1 Episode), First Guard (voice) (1 Episode), Principal Willoughby / Oleander (voice) (1 Episode), Butch / Student #1 (voice) (1 Episode), Butch / Elf (voice) (1 Episode), Eustace Strych (voice) (1 Episode), Cowboy (voice) (1 Episode), Pterodactyl / Chicks (voice) (1 Episode), Llama / Turkey Bride (voice) (1 Episode), Mort / Evil Jimmy / Romantic Jimmy / Funny Jimmy (voice) (1 Episode), Carl's Dad (voice) (1 Episode), Llama / Butch / Squirrel (voice) (1 Episode), Slick TV Pitchman (voice) (1 Episode), Carl's Dad / Principal Willoughby (voice) (1 Episode), Announcer / Algae Guard (voice) (1 Episode), Carl's Dad / Carl's Mom / Butch / Principal Willoughby (voice) (1 Episode), Big Brother (voice) (1 Episode), Gus (voice) (1 Episode), Squid (voice) (1 Episode), Robo-Fiend (voice) (1 Episode), Carl's Dad / Chip (voice) (1 Episode), Captain (voice) (1 Episode), Carl's Dad / Carl's Mom / Butch (voice) (1 Episode), Principal Willoughby / Skeet (voice) (1 Episode), Dad #1 (voice) (1 Episode), Evil Jimmy / Guy (voice) (1 Episode), Eustace Strych / Martian #1 (voice) (1 Episode), Thomas Edison (voice) (1 Episode), Oleander (voice) (1 Episode), Principal Willoughby / Mummy #2 / Narrator / Instructor (voice) (1 Episode), Principal Willoughby / Ninja (voice) (1 Episode), Banjo Boy (voice) (1 Episode)