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 Lynda Carter The President Guest Star Teri Hatcher Rhea Guest Star Calista Flockhart Cat Grant Guest Star Greg Berlanti Executive Producer Allison Adler Executive Producer Andrew Kreisberg Executive Producer Sarah Schechter Executive Producer Millicent Shelton Director Jessica Queller Writer Derek Simon Writer