Patty Tolan is one of the four Ghostbusters in the 2016 movie. And she is also played by Leslie Jones.
Personality
She is the practical, street smarts member of the term. She also is a wealth of information on New York city's history.
History
She being a MTA worker, meets many "characters" in her line of work, but Rowan North takes the cake. One day she noticed him disappear going down the tunnel. While searching for him, she finds a odd sparking device. Then she sees a ghost. She visits the Ghostbusters and asks for their help.