Bill Murray
Bill Murray was okay with doing a second Ghostbusters movie, but definitely not a third. Director Ivan Reitman said it was hard to get Murray to do a second film, so he wasn't surprised that the third one was a no-go. Dan Aykroyd didn't blame him. “I never begrudged him not being in the third movie, though I wrote a nice part for him in ‘Hellbent,’ where the ‘Ghostbusters’ go to hell. He’s got very high standards and a high bulls**t detector,” he told EW.