Nicolas Kent Stahl (born December 5, 1979) Is An American Actor. Starting Out As A Child Actor, He Gained Recognition For His Performance In The 1993 Film The Man Without A Face And Then Embarked On A Successful Career As A Child Actor. He Later Transitioned Into His Adult Career With Roles In Bully, Sin City, In The Bedroom, The HBO Series Carnivàle, And Terminator 3: Rise Of The Machines, In Which He Took Over The Role Of John Connor, Originally Played By Edward Furlong.