Robert Knepper, who played the villain Theodore “T-Bag” Bagwell on Prison Break, has been cast as the new bad guy on Heroes for next season, according to The Hollywood Reporter. The actor will appear in at least six episodes of the series’ fourth season as Samuel, a charismatic but evil man with a twisted sense of humor, who will veer into the lives of all the heroes. Knepper also recently appeared in Transporter 3 and The Day the Earth Stood Still.