|Birth Name:||Christopher Eugene O'Donnell|
|Birth Date:||June 26, 1970|
|Birth Place:||Winnetka, Illinois, United States|
O'Donnell reportedly was part of a field of candidates for Robin that included Leonardo DiCaprio, Matt Damon, Jude Law, Ewan McGregor, Corey Haim, Corey Feldman, Toby Stephens, and Scott Speedman. Producers narrowed their choices to DiCaprio and O'Donnell. At a comic book convention, they asked a group of 11-year-old boys, the target audience, which actor could win a fistfight. After the boys overwhelmingly declared O'Donnell the winner, he was ultimately given the role.
O'Donnell featured prominently in the TNT miniseries The Company alongside former Batman actor Michael Keaton.
- Buddy Threadgoode in Fried Green Tomatoes (1991)
- Charlie Simms in Scent of a Woman (1992)
- D'Artagnan in The Three Musketeers (1993)
- Dick Grayson/Robin in Batman Forever (1995)
- Ernest Hemingway in In Love and War (1996)
- Dick Grayson/Robin in Batman & Robin (1997)
- G. Callen in NCIS: Los Angeles (Television) (2009-present)