Diamond Jim in the stands
Diamond Jim Tannen
Biographical information
Date of birth1850s
Age (1885)30s
Physical description
Hair colorBrown
Eye colorBrown
Behind-the-scenes information
Voiced byThomas F. Wilson

Diamond Jim Tannen was a gangster during the 1897 National League Pennant Race in Boston, Massachusetts.


Diamond Jim Tannen pressured Pee Wee McFly of the Boston Beaneaters to throw their game for his profit. Marty McFly intervened and helped Pee Wee win, which led to the arrest of Diamond Jim.

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