Full Cast — Invader ZIM (2001–2006)

Richard Steven Horvitz

Zim (voice)

Andy Berman

Dib (voice)

Rosearik Rikki Simons

GIR (voice)

Melissa Fahn

Gaz (voice)

Lucille Bliss

Ms. Bitters (voice)

Rodger Bumpass

Professor Membrane (voice)

Kevin McDonald

Almighty Tallest Purple (voice)

Wally Wingert

Red / SIR (voice)

Mo Collins

RoboMom / Zita (voice)

Danny Cooksey

Olivia D'Abo

Candi Milo

Girl (voice) / Mrs. Buggy / Giganto Baby (voice) / Clara / Woman in Crowd (voice)

Jhonen Vasquez

Computer Voice / Old Kid / Brian (voice) / Minimoose / Computer / Precocious Kid / Kid in Crowd (voice)

R. Lee Ermey

Eliza Schneider

S. Scott Bullock

Sherman Howard

Oog-Oh (voice)

Dwight Schultz

Greg Ellis

Philece Sampler

Scientist #4 / Germ Woman / Tiny Germ Voice (voice)