Ruby Rose Kate Kane Actor Meagan Tandy Sophie Moore Actor Camrus Johnson Luke Fox Actor Nicole Kang Mary Hamilton Actor Rachel Skarsten Alice Actor Dougray Scott Jacob Kane Actor Elizabeth Anweis Catherine Hamilton-Kane Actor Brandon Routh The Atom Guest Star LaMonica Garrett The Monitor Guest Star Candice Patton Iris Guest Star Tyler Hoechlin Clark Guest Star Bitsie Tulloch Lois Guest Star Melissa Benoist Kara Guest Star Kevin Conroy Bruce Wayne Guest Star Katherine McNamara Mia Guest Star Caity Lotz Sara Guest Star Dominic Purcell Rory Guest Star Jon Cryer Lex Luthor Guest Star Tom Welling Guest Star Erica Durance Guest Star Greg Berlanti Executive Producer Caroline Dries Executive Producer Geoff Johns Executive Producer Sarah Schechter Executive Producer Laura Belsey Director Don Whitehead Writer Holly Henderson Writer