Ray Stantz (Dan Aykroyd)

Ray was another one of the original members of the Ghostbusters who, after Egon left, reopened his occult shop in New York City. He was the last of the group to hear from Egon and the person Phoebe alerts to the happenings in Oklahoma. Because of that, we can presume he got Peter and Winston back together to help everyone defeat Gozer in the end.