'Supergirl' have cast actress Laura Vandervoort and actor Jeff Branson, with Blake Berris to guest star. The announcement was made Warner Bros. Television's 'Supergirl' session at the Television Critics Association Winter 2016 Press Tour. Actress Laura Vandervoort (Smallville, Bitten), who played Kara/Supergirl on Smallville, will guest-star in an upcoming episode of 'Supergirl' as the villain Indigo.  Indigo is described … Continue reading ‘Supergirl’ Casts Jeff Branson and Laura Vandervoort, Blake Berris To Guest Star