Zach Galligan is an American actor known for his role as Billy Peltzer in the Steven Spielberg-produced 1984 blockbuster Gremlins. Following the first Gremlins film, Galligan appeared in Nothing Lasts Forever, the unfinished final film of John Belushi, which also starred Bill Murray and Dan Akyroyd. In 1988, he starred as Mark Loftmore in the horror comedy Waxwork. He reprised his role as Billy Peltzer in the 1990 sequel Gremlins 2: The New Batch.
Galligan has appeared in numerous television series and films, notably having roles in Law and Order, Star Trek: Voyager, 7th Heaven and Dr. Quinn, Medicine Woman.