Melissa Benoist Kara Danvers, Supergirl Actor Chyler Leigh Alex Danvers Actor Mehcad Brooks James Olsen Actor David Harewood Hank Henshaw Actor Jeremy Jordan Winslow "Winn" Schott Actor Chris Wood Mon-El Actor Katie McGrath Lena Luthor Actor Odette Annable Samantha Arias Actor Floriana Lima Maggie Sawyer Guest Star Calista Flockhart Cat Grant Guest Star Erica Durance Alura Zor-El Guest Star Adrian Pasdar Morgan Edge Guest Star Emma Tremblay Ruby Arias Guest Star Greg Berlanti Executive Producer Allison Adler Executive Producer Andrew Kreisberg Executive Producer, Writer Sarah Schechter Executive Producer Jesse Warn Director Robert Rovner Writer Caitlin Parrish Writer