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 Dean Cain Dr. Jeremiah Danvers Guest Star Brenda Strong Lillian Luthor Guest Star Sharon Leal M'gann M'orzz Guest Star Ian Gomez Snapper Carr Guest Star Greg Berlanti Executive Producer Allison Adler Executive Producer Andrew Kreisberg Executive Producer Sarah Schechter Executive Producer Glen Winter Director Robert Rovner Writer Paula Yoo Writer