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 Floriana Lima Maggie Sawyer Actor Brenda Strong Lillian Luthor Guest Star Sharon Leal M'gann M'orzz Guest Star William Mapother Dr. Rudy Jones, Parasite Guest Star Nikohl Boosheri Kelly Sotto Guest Star Greg Berlanti Executive Producer, Writer Allison Adler Executive Producer Andrew Kreisberg Executive Producer, Writer Sarah Schechter Executive Producer Caitlin Parris Writer Larry Teng Director