Offers Ausiello, "Alan Ritchson has signed on to reprise his role as Arthur 'AC' Curry (a.k.a. Aquaman) during November sweeps. AC was last seen in season 8, when his secret identity was discovered by LuthorCorp. I’m told the Justice Leaguer will resurface in this season’s ninth episode."
Other returning actors include John Glover as Lionel Luthor, James Marsters as Brainiac, Laura Vandervoort as Kara/Supergirl, Michael Shanks as Hawkman and John Schneider as Jonathan Kent.