Slimer becomes trapped in the Containment Unit and the Ghostbusters are being picked off one by one by an aggressive dog-like monster called Fenris. Eduardo decides he must save the green spud by travelling into the Containment Unit, leaving the others to stop the demon god Surter plot to bring about Ragnarok.
- Egon Spengler - Maurice LaMarche
- Janine Melnitz - Pat Musick
- Kylie Griffin - Tara Charendoff
- Eduardo Rivera - Rino Romano
- Roland Jackson - Alfonso Ribeiro
- Garrett Miller - Jason Marsden
- Slimer - Billy West