J.C. Carbone/Marty/Himself

Colonel Mustard

Boris/Professor Plum

Dr. Spooner

Big G/ Dr. Jacob Cullen/J.C.'s brother

Bella/Mrs. White

Celeste

Herself

Boris's henchman

Boris's henchman

Yellow Jacket

Cupid's messenger

Jake

Sarine

Ms. Scarlet/Summer

The Slasher/Mr. Green

Mrs. Peacock

Mr. Boddy

Sam

Mr. Carbone

Deputy Peterson (voice)