Supergirl Season 1 Season 2 Season 3 Season 4 Season 5 Season 6 Crossovers As of 2021, Benoist has appeared as Kara Danvers in five Arrowverse shows:
Supergirl,
The Flash, Arrow, Legends of Tomorrow and
Batwoman. In the 2015-16 television season,
The Flash accidentally travels into an alternate Earth while testing a new tachyon enhancement device that was meant to power up his speed. He saves Kara from falling from a building. The Flash introduces himself as Barry Allen and explains about the multiverse to Kara and her friends. Before returning home, Barry helps Kara defeat
Silver Banshee and
Livewire. In the 2016-17 television season, Barry and his friend
Cisco Ramon teleport to Kara's Earth, coined Earth-38 by Cisco, and recruit Kara for an alien invasion led by an extraterrestrial race known as the Dominators on Earth-1. The heroes learn the Dominators plan to kill all metahumans on Earth due to Barry's abilities to alter with the timeline. Barry plans to surrender but the heroes dissuade him from doing so. The heroes discover a bomb from one of the Dominator's ships and destroy it, forcing the Dominators to flee. In March 2017,
J'onn J'onzz and
Mon-El arrive on Earth-1 with a comatose Kara in hopes that Barry and his team could revive her and warn Barry that one of their escaped prisoners—the
Music Meister—is after him as well. When Meister attacks Barry, he is placed in a shared coma with Kara. In the coma, Barry and Kara are forced in a musical which Meister planned so that Barry and Kara can love their personal loved ones. Kara, J'onn, and Kara return to their Earth. Kara then starts a relationship with Mon-El after. In the 2017-18 television season, Kara and her sister
Alex are invited to Barry and
Iris' wedding on Earth-1, however, they are invaded by Nazis from Earth-X led by
Dark Arrow, Overgirl (Kara's Earth-X doppelgänger) and
Eobard Thawne / Reverse-Flash from Earth-1. The invaders capture Kara, who plan to take her heart and give it to Overgirl, who is dying from disproportionate
solar irradiance in her heart. Dark Arrow plans to use the Prism, powered by
S.T.A.R. Labs' particle accelerator, to create artificial red sunlight that can weaken both Karas' invulnerability, allowing Thawne to transplant Kara's heart to Overgirl. Iris and
Felicity rescue Kara and return to Earth-1. Dark Arrow and his team lead a force of Earth-X Nazis to invade Earth-1 but are ultimately defeated with Kara carrying a radioactive Overgirl to space where she explodes and dies. Following
Martin Stein's funeral, Kara and Alex return to Earth-38. In the 2018-2019 television series, Dr.
John Deegan is given the Book of Destiny by the
Monitor to rewrite reality in his vision. When he swaps the lives of Barry and Oliver, the two discover the change in reality and seek Kara, whose Earth is unaffected by the change, on Earth-38 for help. They later run into the vigilante
Batwoman while confronting Deegan in
Gotham City. Eventually, Oliver makes a deal with the Monitor to restore reality back to normal. In the 2019-2020 television series, the multiverse is slowly being erased by the
Anti-Monitor. Kara is recruited among other heroes as the chosen Paragons to defeat the Anti-Monitor. When Oliver sacrifices himself to kill the Anti-Monitor, a restored multiverse is put back together combining into one Earth coined "Earth-Prime" including Kara's Earth.
Alternate Earths Overgirl (Earth-X) During the
Crisis on Earth-X crossover event, one of the main antagonists is the Earth-X Nazi doppelganger of Kara known as Overgirl. She served alongside
Dark Arrow, who is revealed to be the Earth-X doppelganger of Oliver Queen. Eventually, during a battle with Kara, Overgirl's solar radiation goes nuclear and Kara carries her into space, where her body explodes, killing her. == Tie-in comics and novels ==