Character Name : Grim / Sperg (voice)

Original Name : Greg Eagles

Gender : Male

Character Name : Billy / Billy's Dad (voice)

Original Name : Richard Steven Horvitz

Gender : Male

Character Name : Mandy (voice)

Original Name : Grey DeLisle

Gender : Female

Character Name : Irwin (voice)

Original Name : Vanessa Marshall

Gender : Female

Character Name : Velma Green the Spider Queen (voice)

Original Name : Kari Wahlgren

Gender : Female

Character Name : Jeff the Spider (voice)

Original Name : Maxwell Atoms

Gender : Male

Character Name : Chocolate Cow (voice)

Original Name : Dee Bradley Baker

Gender : Male

Character Name : Gladysaur (voice)

Original Name : Jennifer Hale

Gender : Female

Character Name : Principal Goodvibes (voice)

Original Name : Chris Cox

Gender : Male

Character Name : Pud'n (voice)

Original Name : Jane Carr

Gender : Female

Character Name : Lord Pain (voice)

Original Name : Henry Gibson

Gender : Male

Character Name : Mr. Spleen (voice)

Original Name : Phil LaMarr

Gender : Male

Character Name : Mindy / Velma's Mom / Eris (voice)

Original Name : Rachael MacFarlane

Gender : Female

Character Name : Kalgoron (voice)

Original Name : Michael McKean

Gender : Male

Character Name : Ms. Butterbean (voice)

Original Name : Renee Raudman

Gender : Female

Character Name : Curtis (voice)

Original Name : David L. Lander

Gender : Male

Character Name : Boogey (voice)

Original Name : Fred Willard

Gender : Male

Character Name : Plain Cow (voice)

Original Name : James Sie

Gender : Male

Character Name : General Skarr (voice)

Original Name : Armin Shimerman

Gender : Male

Character Name : Velma's Dad / Spider #1 (voice)

Original Name : Dave Wittenberg

Gender : Male