It is an undead man wearing an exterminator jumpsuit and equipped with a pack with a large gun attachment.
- Attack: Low
- Life: Average
- Speed: Fast
"Ghost Killer was the best hunter of the East Coast, but with more and more mutants getting crushed in the arena, he had to join the fight!"
- This mutant is a reference to Ghostbusters.
- Its Movies Reactor Version is direct reference to Jim Carrey's role as Ace Ventura from cult classic Ace Ventura: Pet Detective.
- The Platinum version is direct reference to Walter White from Breaking Bad.
- In his Movie Reactor version, there are three mutant trapped in green tubes: Kaiju Kitty (Bronze version), Exo Cookie and what appears to be Bio-Hedgehog.