Grim / Sperg (voice)

Greg Eagles

Acting

Billy / Billy's Dad (voice)

Richard Steven Horvitz

Acting

Mandy (voice)

Grey DeLisle

Acting

Irwin (voice)

Vanessa Marshall

Acting

Velma Green the Spider Queen (voice)

Kari Wahlgren

Acting

Jeff the Spider (voice)

Maxwell Atoms

Writing

Chocolate Cow (voice)

Dee Bradley Baker

Acting

Gladysaur (voice)

Jennifer Hale

Acting

Principal Goodvibes (voice)

Chris Cox

Acting

Pud'n (voice)

Jane Carr

Acting

Lord Pain (voice)

Henry Gibson

Acting

Mr. Spleen (voice)

Phil LaMarr

Acting

Mindy / Velma's Mom / Eris (voice)

Rachael MacFarlane

Acting

Kalgoron (voice)

Michael McKean

Acting

Ms. Butterbean (voice)

Renee Raudman

Acting

Curtis (voice)

David L. Lander

Acting

Boogey (voice)

Fred Willard

Acting

Plain Cow (voice)

James Sie

Acting

General Skarr (voice)

Armin Shimerman

Acting

Velma's Dad / Spider #1 (voice)

Dave Wittenberg

Acting