User blog comment:ZombifiedRipper/Possible Chance that Ra's Al Ghul May Appear/@comment-81.105.8.28-20130904224008/@comment-24034641-20131026112138

nah, Barrowman is cast as Merlyn, however it's currently unknown whether he'll be there as flashbacks, or actually alive and in hiding, he was taught by Ra's Al Ghul though