To take over other computer systems
Prime Computer was a fearsome computer system owned by Prime Evil and set up inside Hauntquarters. It controlled all of the building's machinery and was innitially operated by Scared Stiff. Prime Evil wanted Stiff to use the computer system to hack into all the worlds military computers and take control of every nuclear missile on earth. But when Prime Computer was hacked by a teenager called Gene, Prime Evil decided to put the boy in charge of his hacking operation instead.
Gene was kidnapped and put under a spell by Knight of Terror, but when the boy's friend Corky mustered up the courage to break the spell, Gene used his computer skills to turn let all the machinery inside Hauntquarters go haywire and made his escape with Corky and the Ghostbusters.