Science teacher who mentors Phoebe and joins the ghostbusting efforts.
Gary and Callie are a couple facing family and professional pressure.
The plot identifies Gary Grooberson as Callie Spengler's boyfriend and shows them relocating to New York together.
Gary supports Ray's renewed Ghostbusters operation.
Gary relocates with Callie's family to aid Ray Stantz and Winston Zeddemore in re-establishing the Ghostbusters.
Gary works within Winston's expanding supernatural-response network.
Gary joins the Ghostbusters effort while Winston organizes the firehouse and paranormal research operations.
Explore the full interactive character relationship map of Ghostbusters: Frozen Empire