The Mayor's Aide' is a member of Mayor Lenny's staff in 1989.
On New Year's Eve 1989, the Mayor's Aide was present in a conference room at New York City Hall trying to solve the paranormal crisis at hand. When Lenny arrived and discovered what Jack Hardemeyer did to the Ghostbusters, the Aide stood up to get out of the way. He looked out the window and saw the Slime Eclipse building up in the sky. He alerted Lenny, who then ordered someone to find the Ghostbusters.