Franklin "Mouse" Finbar is one of the five selectable playable character in Jumanji's video game form that appears in Jumanji: Welcome to the Jungle.
He is the avatar of Anthony Johnson.
- Zoology: He is an expert on animal behavior and biology, giving helpful advice and knowledge on the various creatures of Jumanji.
- Weapons Valet: He carries a variety of weapons in his bag and gives them to Bravestone whenever he needs it.
- Cake: He ate pound cake, which makes him explode.
- Speed: He is a slow runner, possibly due to his backpack being loaded with weapons or because he's short.
- Strength: He was not strong when he slapped Bravestone in the face.
- Fridge initially chose Finbar as he misread his name as "Moose" thinking this would mean he is big. He was shocked to discover he was short and he was actually "Mouse."
- At first, when Finbar (Fridge) ate the pound cake at the Bazaar, he assumed his weakness of it was simply an addiction for it or an allergic reaction, only to then, a few moments later, explode.