Now that Supergirl has been on the air for a few years, the Supergirl season 5 cast appears to be bigger than any season before it. Originally airing on CBS and later moving to The CW, Supergirl's world (and universe) has increasingly expanded with every season, with iconic DC Comics characters, supervillains, and organizations making the jump from the page to the screen - and Supergirl season 5 won't be any different.
Supergirl season 4 ended one story arc - about the Red Daughter - but set up another one with regards to Kara Danvers' closest friends as well as Crisis on Infinite Earths. Supergirl season 5 expands the narrative in more ways than one and sees Kara face her toughest choices as a superhero. Supergirl season 5 was officially ordered in January 2019 and premiered in October, continuing to air on Sunday nights. This time, it airs along with fellow Arrowverse series Batwoman.
The Supergirl season 5 cast maintains the primary lineup from previous seasons but also brings back some actors and characters while introducing entirely new ones into the fold. Here's the full Supergirl season 5 cast, including recurring actors and guest stars.
Supergirl Season 5 Main Cast
Melissa Benoist as Kara Danvers aka Supergirl: Kara Danvers is a CatCo reporter who doubles as Supergirl. She protects National City (and her planet, Earth-38) as well as fights alongside the rest of the Arrowverse heroes. Benoist has starred in films such as Whiplash and Patriots Day but is known for her role as Supergirl.
Chyler Leigh as Alex Danvers: Alex Danvers is the current director of the DEO - a secret government agency - and Kara's sister. Chyler Leigh portrays Alex, and before joining Supergirl, she was best known for playing Lexie Grey in Grey's Anatomy.
Mehcad Brooks as James Olsen: James Olsen is famously Superman's best friend, and in Supergirl, he becomes the acting CEO of CatCo Worldwide and the vigilante Guardian. Prior to becoming Guardian, Mehcad Brooks starred on Desperate Housewives and Necessary Roughness.
Katie McGrath as Lena Luthor: Lena Luthor is the CEO of L-Corp and one of Kara's best friends. She discovers Kara is Supergirl in season 4. Prior to starring in Supergirl, Katie McGrath was best known for playing Morgana in Merlin and Sarah Bennet in Slasher.
Jesse Rath as Querl Dox aka Brainiac 5: Brainiac 5 is a superhero from the future who traveled back in time with the Legion of Superheroes. He now works with the DEO. Aside from his DC role, Jesse Rath is known for playing Alak Tarr on Defiance. He also starred in The CW's No Tomorrow.
Nicole Maines as Nia Nal aka Dreamer: Nia Nal is a former speechwriter for Cat Grant and a current CatCo reporter. She doubles as the superhero Dreamer, a descendant of DC's Dream Girl. Supergirl marks Nicole Maines' first major role; she also previously starred in an episode of Royal Pains.
David Harewood as J'onn J'onzz aka Martian Manhunter: J'onn is from the planet Mars and is known for being the Martian Manhunter. Instead of policing aliens, J'onn uses the skills he learned from being the former head of the DEO to be a private investigator. David Harewood portrays the iconic DC superhero, but before taking the part, he was known for starring in TV shows such as Homeland and The Vice.
Azie Tesfai as Kelly Olsen: Kelly Olsen is James Olsen's sister and current love interest for Alex Danvers. Azie Tesfai's biggest role prior to Supergirl was recurring on Jane the Virgin. She also guest-starred on a number of TV shows, such as Silicon Valley and Royal Pains.
Andrea Brooks as Eve Teschmacher: Eve Teschmacher is an agent of Leviathan who worked as an assistant under both Lex and Lena Luthor. She is portrayed by Andrea Brooks, who is perhaps best known for playing Faith Carter in When Calls The Heart.
Julie Gonzalo as Andrea Rojas: Known as Acrata, Andrea Rojas is Supergirl's latest villain who has the power to teleport using shadows. She is also a businesswoman and heiress to a tech fortune. Julie Gonzalo starred in a number of movies and TV shows over the years, but is surely known for her series regular roles on Veronica Mars, Eli Stone, and Dallas.
Staz Nair as William Dey: William Dey is an original character created for Supergirl; he's a "hardened" reporter who only believes in the story, not the idealism surrounding it. Staz Nair is primarily known for his role as Qhono on Game of Thrones.
Supergirl Season 5 Recurring & Guest Stars
Cara Buono as Gamemnae: In the comics, Gamemnae is an Atlantean villain who's been around for thousands of years. She created a group known as the League of Ancients, comprised of people who can all one day defeat the Justice League. Gamemnae is portrayed by Cara Buono, who is primarily known for playing Karen Wheeler on Stranger Things.
Mitch Pileggi as Rama Khan: Rama Khan is a member of the League of Ancients, who can control elements such as earth and fire. Khan is also the leader of the country Jarhanpur. Mitch Pileggi plays Rama, and he's a widely accomplished TV actor, but his most recognizable role is Walter Skinner from The X-Files.
Jon Cryer as Lex Luthor: Lex Luthor is Superman's iconic arch-nemesis, who was seemingly killed at the end of Supergirl season 4. Jon Cryer, who is best known for playing Alan Harper on Two and a Half Men, returns as Lex in Crisis on Infinite Earths.
LaMonica Garrett as Monitor and Anti-Monitor: The Monitor's job is to recruit heroes to fight the Anti-Monitor in Crisis on Infinite Earths. LaMonica Garrett portrayed the Monitor in Elseworlds and returns in 2019's crossover. Garrett previously starred in Sons of Anarchy and Designated Survivor before appearing in the Arrowverse.
Tyler Hoechlin as Clark Kent aka Superman: Clark Kent is Kara's cousin from Krypton who is also her world's Superman. He left for Argo after the Elseworlds crossover but returns in Crisis on Infinite Earths. Prior to playing Superman, Tyler Hoechlin was known for his role as Derek Hale on Teen Wolf.
Elizabeth Tulloch as Lois Lane: Lois Lane is one of the Daily Planet's best reporters. She is engaged to Clark Kent and they both left for Argo after they learned she was pregnant. Elizabeth Tulloch returns as Lois Lane in Crisis on Infinite Earths. Previously, her most well-known role was starring as Juliette on Grimm.
Jeremy Jordan as Winn Schott: Winn Schott is a former CatCo and DEO employee who traveled to the future with the Legion of Superheroes. Jeremy Jordan returns to Supergirl after being absent in season 4. Aside from his Supergirl role, Jordan is primarily known for starring in musicals, such as Newsies and Waitress.
Meaghan Rath as a female Brainiac 5: A female version of Brainiac 5 appears in Supergirl season 5, played by Meaghan Rath. She is Jesse Rath's real-life sister and is best known for her role as Sally Malik in Being Human as well as Tani Rey on Hawaii Five-O.
Jennifer Cheon Garcia as Midnight: A different version of the DC character Midnight appears in Supergirl; she's the manifestation of darkness and someone who's out for revenge. Midnight is portrayed by Jennifer Cheon Garcia, who is known for playing Ivory on Van Helsing.
Rahul Kohli as Jack Spheer: Jack Spheer is an inventor and the CEO of the tech company Spheerical. Rahul Kohli returns as Spheer in season 5. Before this, he had a leading role on The CW's iZombie as Dr. Ravi Chakrabarti.