Gizmo (also referred to as "Giz" by Billy) is the main protagonist of the Gremlins duology. He is an adorable Mogwai who is the pet of Billy Peltzer. He doesn't seem to have a single mean bone in his body, making him an Eternal, or Mogwai who refuses to be evil. He used to be owned by Mr. Wing until the old man's death, whereafter Gizmo escaped from his store after it was being destroyed. Gizmo is kind and friendly and currently lives with Billy and Kate Peltzer in New York.
Gizmo was voiced by Howie Mandel.