Don is a Nicelander within the game Fix-It Felix, Jr. He has gray hair, and wears a sea captain's hat and uniform. According to the filmmakers, one of Don's interests includes crafting ships in bottles. He also appears to be close friends with Mary.
Like the other Nicelanders, he resents and fears Ralph for wrecking the building day after day and since Ralph is considered the bad guy.
For images of Don, click here.