Egon Spengler (voice)
Ray Stantz / Slimer (voice)
Winston Zeddemore (voice)
Peter Venkman (voice)
Janine Melnitz (voice)
Louis Tully (voice) / Grundel / Mr. Meredith (voice)
Elizabeth (voice) / Osiris (voice)
Kate / Motorcycle Ghost (voice) / Receptionist (voice)
Samhain (voice) / Samhain / Goblin (voice)
Old Woman / Ghost #1 (voice) / Diva (voice)
Jason (voice) / Cindy (voice)
Buster (voice) / Professor Dweeb / Man on Phone / Bowlers / Senior Citizens (voice)
Teacher / Ghost (voice) / Bag Lady (voice)
Prof. Joanna Barnes / Girl / Orangutan (voice) / Kestrel / Mayor / 1st Girl / Jersey Woman (voice)
Spotty / Bones (voice) / Banana 9000 (voice)
Giant / Gingerbread House / White Rabbit (voice) / Killerwatt (voice)
Catherine (voice)
Inspector Faden / Followers (voice) / Museum Curator / Ants / Museum Crowd (voice)
General (voice) / Lord of the Stench / Arnold Lieberman / Franklin (voice)
Shifter / Slime (voice) / Foul Grungie / Ghosts / Kids (voice)
Gremlin (voice) / Lydia Micawb / Maid (voice)
