Gizmo is a thoroughbred cat of a light auburn brown color with white stripes all over his body and a white muzzle. He has a fluffy tail and amber eyes.
Gizmo is an odd cat, to put it mildly, who is capable of extraordinary feats for one of his kind, such as taking a bath with a shower cap and collecting stamps for the basement walls. One of his favorite hobbies is watching television while sprawled out on a couch.
- Gizmo is the first pet to be introduced in the game. The second one is Bob, Todd's fish.
- In The Trial, Gizmo is shown to have a sticker collection. The stickers are the avatars of several YouTube Let's Players that have played Sally Face.
- When asked about what breed of cat Gizmo is, Steve Gabry responded that he's "probably like a Maine Coon."