Gizmo

Gizmo (also often referred to as "Giz" by Billy) is an adorable, very kind Mogwai who is the pet of Billy Peltzer. He doesn't seem to have a single bit of evil within him unlike some of the other Mogwais, making him an Eternal, or a Mogwai who refuses to be evil. He used to be owned by Mr. Wing until his death. Gizmo currently lives with Billy and Kate Peltzer in New York. He even tries to warn Billy of the other Mogwai, and displays many emotions. At the end of Gremlins, he actually leaves, but might return for the next movie.

Personality
Gizmo is cute, kind, lovable, innocent and adorable Mogwai. Despite not being wicked and vicious like the gremlins and some other Mogwais, Gizmo has shown he's just as adept as they are with weapons and electrical devices, such as being able to know how to work an electrical keyboard, turning on a television, operating a toy car, playing a trumpet, just being plain adorable, and making an effective bow and arrow out of office supplies. This might be a reference to his name, as the word "gizmo" means a gadget.

Gizmo has shown a love for television, which he developed while in the Peltzers' care in the first movie. While Mr. Wing found the idea of the mogwai watching tv ridiculous, it has proven useful for Gizmo as in the first film, he watched a movie involving a race and became interested in cars, or as he called them 'Vroom-Vroom'. In the climax, Gizmo drove a toy car through the department store to reach the greenhouse department before Stripe's new army was born. In the second movie, television proves its use for Gizmo again as he recalled what the hero of the Rambo movie did and mimicked those tactics with amazing results.

Gizmo was responsible for the destruction of the leaders of both batches (interestingly, Stripe met his demise following the destruction of his army, whereas Mohawk was destroyed before). It should be noted that Gizmo took a much more direct approach in Mohawk's destruction than Stripe's, as he shot Mohawk with a flaming arrow in the second movie, whereas he indirectly destroyed Stripe by exposing him to sunlight in the original. Gizmo had become much more assertive than he was in the first movie because, as Billy said, "they pushed him too far".

According to the novelization of the first film, the mogwai are a result of genetic manipulations by an alien scientist to create a creature that would evoke good-naturedness and goodwill amongst the galaxy. However a slight miscalculation caused all but 1 in 10,000 to be mischievous and/or evil and the transformation mogwai can go through being totally unintended. Only one in ten thousand are gentle, and as a result is hated by their brethren. Also, this previously mentioned mogwai is effectively immortal. As Gizmo is gentle, and has a long list of historical figures that have owned him, it is clear that he is this mogwai type. If this mogwai eats after midnight though, he will lose his longevity, becoming a typical gremlin. However, as this is never mentioned in the movie, the credence to this nature of the mogwai/Gizmo is unknown.