Role-Playing Game
Eric Berlin
The twelve people are:
Woodrow WILSON
Howie LONG
Ty COBB
Boris BECKER
Tom JONES
Mike NICHOLS
Montgomery BURNS
Victor GARBER
James MADISON
Newt GINGRICH
Sienna MILLER
Marla GIBBS
The last names of these people are also the last names of various roles played by the actor Walter Matthau. The answer to the puzzle is MATTHAU.