Supergirl (TV) Cast
The cast of Supergirl. Updated on September 1, 2025.
796 actors
Melissa Benoist
as Kara Danvers / Supergirl / Kara Zor-El (126 episodes)

Melissa Benoist portrays Kara Danvers, also known as Supergirl or Kara Zor-El. Kara is a Kryptonian survivor who becomes Earth's protector against various threats. She assumes the identity of Kara Danvers, a mild-mannered reporter, to blend in with human society and protect her secret identity.

Chyler Leigh
as Alex Danvers / Sentinel (126 episodes)

Chyler Leigh plays the role of Alex Danvers, also known as Sentinel. Alex is Kara's adoptive sister and a highly skilled agent for the Department of Extranormal Operations (DEO). She is a strong and determined character who often assists Supergirl in her missions to save National City.

David Harewood
as J'onn J'onzz / Martian Manhunter (126 episodes)

David Harewood portrays J'onn J'onzz, also known as Martian Manhunter. J'onn is the last surviving Green Martian and the director of the DEO. He has shape-shifting abilities and a strong sense of justice, using his powers to help protect Earth alongside Supergirl.

Katie McGrath
as Lena Luthor (96 episodes)

Katie McGrath takes on the role of Lena Luthor. Lena is the younger sister of Lex Luthor and a brilliant scientist. Initially a friend and ally to Supergirl, Lena faces complex moral dilemmas as she balances her family legacy with her own desire to do good.

Jesse Rath
as Querl 'Brainy' Dox / Brainiac-5 (67 episodes)

Jesse Rath portrays Querl 'Brainy' Dox, also known as Brainiac-5. Brainy is a technological genius from the 31st century and a member of the Legion of Super-Heroes. He joins forces with Supergirl and her team, using his advanced knowledge to assist in their fight against villains.

Nicole Maines
as Nia Nal / Dreamer (61 episodes)

Nicole Maines plays Nia Nal, also known as Dreamer. Nia is a transgender woman and a reporter at CatCo Worldwide Media. She possesses the power of precognition and uses her abilities to help protect National City alongside Supergirl and her allies.

Floriana Lima
as Maggie Sawyer (45 episodes)

Floriana Lima portrays Maggie Sawyer. Maggie is a detective with the National City Police Department and a former love interest of Alex Danvers. She is a skilled investigator and often assists the DEO and Supergirl in their efforts to maintain peace and order in the city.

Azie Tesfai
as Kelly Olsen / Guardian (46 episodes)

Azie Tesfai takes on the role of Kelly Olsen, also known as Guardian. Kelly is a psychologist and the sister of James Olsen, who previously held the mantle of Guardian. She eventually takes up the mantle herself to help protect National City alongside Supergirl.

Julie Gonzalo
as Andrea Rojas / Acrata (39 episodes)
Staz Nair
as William Dey (39 episodes)
Peta Sergeant
as Nyxlygsptlnz / 'Nyxly' (20 episodes)
Odette Annable
as Samantha Arias / Reign (24 episodes)
Sam Witwer
as Ben Lockwood / Agent Liberty (23 episodes)
Chris Wood
as Mon-El (47 episodes)
Calista Flockhart
as Cat Grant (26 episodes)
Mehcad Brooks
as James 'Jimmy' Olsen / Guardian (92 episodes)
Dean Cain
as Jeremiah Danvers (6 episodes)
Owain Yeoman
as Vartox (1 episode)
Peter Facinelli
as Maxwell Lord (14 episodes)
Rich Ceraulo Ko
as Agent Hartmann (2 episodes)
Eric Steinberg
as Commander Gor (2 episodes)
Jenna Dewan
as Lucy Lane (15 episodes)
Chris Browning
as Ben Krull / Reactron (1 episode)
Levi Miller
as Carter Grant (1 episode)
Scott Michael Campbell
as Ethan Knox (1 episode)
Robert Gant
as Zor-El (4 episodes)
Faran Tahir
as The Commander (1 episode)
Ben Begley
as Tobey (1 episode)
Derek Mio
as Hayashi (1 episode)
Chris Vance
as Non (9 episodes)
Brit Morgan
as Leslie Willis / Livewire (4 episodes)
Glenn Morshower
as General Sam Lane (4 episodes)
Joan Juliet Buck
as Katherine Grant (1 episode)
Luke Macfarlane
as Agent Donovan (2 episodes)
Charles Halford
as Jemm (1 episode)
Bryan Lugo
as Looter (1 episode)
Peter MacKenzie
as Dirk Armstrong (1 episode)
Aaron Lustig
as Lawyer #1 (1 episode)
René Ashton
as Lawyer #2 (1 episode)
Jeannine Cota
as KNOC Newscaster (1 episode)
Dar Dixon
as Board Member #1 (1 episode)
Tawny Cypress
as Senator Miranda Crane (2 episodes)
Blake Jenner
as Adam Foster (2 episodes)
Ric Sarabia
as Alien Soldier (1 episode)
Emma Caulfield Ford
as Cameron Chase (1 episode)
Frank Maharajh
as Police Officer (1 episode)
Daniel DiMaggio
as Kal-El (1 episode)
Jeff Branson
as Carl Draper / Master Jailer (1 episode)
Laura Vandervoort
as Indigo (3 episodes)
Patrick O'Connell
as General Mathers (1 episode)
Todd Sherry
as Professor Alphonse Luzano (1 episode)
Blake Berris
as Gabriel Phillips (1 episode)
Jacqueline Grace Lopez
as Brooke (1 episode)
Ray Campbell
as Detective Warren (1 episode)
Eddie McClintock
as Col. James Harper (1 episode)
Aisha Tyler
as Aisha Tyler (1 episode)
Julie Chen Moonves
as Julie Chen (1 episode)
Sara Gilbert
as Sara Gilbert (1 episode)
Sharon Osbourne
as Sharon Osbourne (1 episode)
Sheryl Underwood
as Sheryl Underwood (1 episode)
Eve Torres
as Maxima (1 episode)
Harriet Sansom Harris
as Sinead (1 episode)
Frederick Schmidt
as John Corben / Metallo (3 episodes)
Rich Ting
as Dr. Gilcrist / Metallo 2 (1 episode)
Ian Gomez
as Snapper Carr (8 episodes)
Dichen Lachman
as Veronica Sinclair / Roulette (2 episodes)
Ian Casselberry
as Quill (1 episode)
John DeSantis
as Draaga (1 episode)
Alexander Cendese
as Chet Miner (1 episode)
William Mapother
as Dr. Rudy Jones / Parasite (1 episode)
Nikohl Boosheri
as Kelly Sotto (1 episode)
Jason Gray-Stanford
as Rand O'Reilly (1 episode)
Victor Zinck Jr.
as Phillip Karnowsky (1 episode)
Harley Quinn Smith
as Izzy Williams (1 episode)
James Urbaniak
as Maaldorian Doctor (1 episode)
Steve Valentine
as Mad Scientist (1 episode)
Jessie Graff
as Lisa Gold (1 episode)
Marci T. House
as Dr. Hampton (1 episode)
Terrell Tilford
as Armek (1 episode)
Peter Gadiot
as Mr. Mxyzptlk (2 episodes)
Tamzin Merchant
as Lyra Strayd (5 episodes)
Darren Criss
as Music Meister (1 episode)
Teri Hatcher
as Rhea (8 episodes)
Kevin Sorbo
as Lar Gand (3 episodes)
Johnny Ghorbani
as Derrick Simmons (1 episode)
Claudia Doumit
as Beth Breen (1 episode)
David Hoflin
as Rick Malverne (1 episode)
Gregg Henry
as Peter Thompson (1 episode)
Lonnie Chavis
as Marcus (1 episode)
Mark Gibbon
as General Zod (1 episode)
Robyn Ross
as Mom (1 episode)
Adrian Pasdar
as Morgan Edge (4 episodes)
David St. Louis
as Robert DuBois / Bloodsport (1 episode)
Jeremy Burtenshaw
as Gunner (1 episode)
Jesse Chongo
as Young Fan (1 episode)
Carlen Escarraga
as Soldier (1 episode)
Gelsea Mae
as Staffer #2 (1 episode)
Marc Senior
as Staffer #1 (1 episode)
Amanda May
as Pilot 1 (1 episode)
Yael Grobglas
as Gayle Marsh / Psi (2 episodes)
For the best insights and data about the TV show Supergirl, visit our main Supergirl page.