Greg Eagles
Grim / Sperg (voice)
Acting
Richard Steven Horvitz
Billy / Billy's Dad (voice)
Acting
Grey DeLisle
Mandy (voice)
Acting
Vanessa Marshall
Irwin (voice)
Acting
Kari Wahlgren
Velma Green the Spider Queen (voice)
Acting
Maxwell Atoms
Jeff the Spider (voice)
Writing
Dee Bradley Baker
Chocolate Cow (voice)
Acting
Jennifer Hale
Gladysaur (voice)
Acting
Chris Cox
Principal Goodvibes (voice)
Acting
Jane Carr
Pud'n (voice)
Acting
Henry Gibson
Lord Pain (voice)
Acting
Phil LaMarr
Mr. Spleen (voice)
Acting
Rachael MacFarlane
Mindy / Velma's Mom / Eris (voice)
Acting
Michael McKean
Kalgoron (voice)
Acting
Renee Raudman
Ms. Butterbean (voice)
Acting
David L. Lander
Curtis (voice)
Acting
Fred Willard
Boogey (voice)
Acting
James Sie
Plain Cow (voice)
Acting
Armin Shimerman
General Skarr (voice)
Acting
Dave Wittenberg
Velma's Dad / Spider #1 (voice)
Acting