Ghost Creeper was giant purple ant that lived in the Caves of Doom on Planet Doom. It was able to shoot webbing from it's antenae. Like many ghosts, Ghost Creeper was under the command of Prime Evil. At his command, the Creeper attacked the Ghostbusters, who were stuck in the Caves of Doom. The Ghost Creeper was defeated by the Ghostbusters and Jessica Wray using Ghost Gummer Balls.