Robert Knepper played Morgan Ross in the episode Ellie. He is best known for starring as Theodore "T-Bag" Bagwell in the drama series Prison Break (with William Fichtner). He has also had recurring roles on Heroes, Carnivàle and Thieves. He has also appeared in the motion pictures Hitman, Transporter 3, Good Night and Good Luck (with Reed Diamond, Glenn Morshower and Ray Wise), Hostage (with Morshower), Percy Jackson: Sea of Monsters, The Day the Earth Stood Still (with James Hong) and R.I.P.D. (with Hong and Mary-Louise Parker).

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