Shark's Back Room is a minor location in 12 Oz. Mouse. This room serves the purpose as a backroom/home for Shark. Usually Shark appears in this room, wearing a outfit of some kind, and drinking tea. Other people such as Rectangular Businessman, Producer Man, Pronto, Bug, Francis and Human Citizens have visit this room before.
In "Bowtime", the Producer Man interrupted Shark's break in his room, saying their plan was a success, and he finds the Rectangular Businessman on his wall killed by arrows, but soon he annoys Shark with a "Zoo Day" T-Shirt, and gets killed by a Buzzsaw offscreen with blood splattering. Later on in the episode, Shark and the Rectangular Businessman watch footage of Mouse and co. escaping to the Desert, and Shark hires Pronto to deal with Fitz, and rejects Bug's purpose in the mission.
Shark's Gun and a monitor displaying a image of Asprind can be seen in this back room. The location of the backroom is unknown, however it could be located in one of the buildings that Shark works in, presumably somewhere in the building where his office is located or the other building where his party happened, and where his monitor room is located in.
The room is a plain white room with a carpet, and with a fireplace with wood, and a pile of fire, with a picture of Shark and a globe, a book-shelve full of books, a fish and a sphinx like statue, with a wheeled desk with a bottle, and bucket on it.
- Anytime, this room is shown with Shark inside this room, he is always seen wearing a outfit, and also drinking tea from a glass cup with a pink straw.
- In "Bowtime", his tea and glass cup broke when it was knocked over by the Producer Man.
- The eyes of the sphinx like statue turned red in the episode "Bowtime" in the background.