Lena Headey Sarah Connor Actor Thomas Dekker John Connor Actor Summer Glau Cameron Phillips Actor Brian Austin Green Derek Reese Actor Richard T. Jones James Ellison Actor Garret Dillahunt Cromartie Actor Shirley Manson Catherine Weaver Actor Leven Rambin Riley Actor Mackenzie Brooke Smith Guest Star Alanna Masterson Guest Star Adam Wylie Guest Star Susan Floyd Guest Star Thomas Garner Guest Star Cyd Strittmatter Guest Star Shane Edelman Guest Star Jim Jansen Guest Star John Pyper-Ferguson Guest Star Max Perlich Guest Star Ned Bellamy Guest Star