Pozo

Pozo, a mafia-type leader of ghosts, was the main antagonist in the episode "Partners in Slime". Pozo had Louis and Janine kidnapped at a mall, and sent word to the Ghostbusters they would not be released until they turned the company over to him. Pozo was stabbed in the back by Shifter, a ghost that had once worked with Pozo but had been caught by the Ghostbusters. The Ghostbusters set Shifter free in exchange for his help in rescuing their friends and trapping Pozo.