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 Harley Quinn Smith Izzy Williams Guest Star Ian Gomez Snapper Carr Guest Star Dichen Lachman Veronica Sinclair, Roulette Guest Star James Urbaniak Maaldorian Doctor Guest Star Greg Berlanti Executive Producer Allison Adler Executive Producer Andrew Kreisberg Executive Producer, Writer Sarah Schechter Executive Producer Kevin Smith Director Eric Carrasco Writer Jess Kardos Writer