This is a mug modeled after the character of Sloth, from the 1985 film by Steven Spielberg, The Goonies.

Sloth is the youngest member of the Fratellis gang, and is usually kept chained in their basement. He is 6' 8" and muscular, but disfigured and has trouble speaking.

Later in the film, he makes friends with a young Hawaiian-shirt-wearing boy, Chunk, who is a member of "The Goonies". The Sloth character mug (in blue) was sold as a set with the Chunk mug (in red).