|The Last Daughter of Krypton|
|Season 6, Episode 10 (73)|
PART 2 OF 2: THE TRUE HEIR- As Desaad and Kalibak take Karen to the Source Wall, Reign continues to supplant Kara on Earth. The team takes on Lillian, and Lena suffers the consequences of her actions. Kara finds herself in Rao's Light, where she encounters Astra, Alura, and Kal-El. On Earth, Reign continues to subject National City to her own brand of justice. Alex and Lena learn Kara's fate. Kara Danvers battles Reign and Darkseid for the future of Earth and the souls of humanity. Lena visits Clark and James in Metropolis. Alex Danvers helps Karen Starr recuperate.
- Melissa Benoist as Kara Danvers/Supergirl
- Odette Annable as Reign & Samantha Arias
- Dianna Agron as Major Raya Zod-El
- Laura Benanti as Astra In-Ze & Alura Zor-El
- Mechad Brooks as James Olsen/Guardian
- Wallis Day as Junior Magistrate Nyssa-Vex
- Jenna Dewan as Lucy Lane/Superwoman
- Claire Holt as Karen Starr/Power Girl
- Tyler Hoechlin as Clark Kent/Superman
- Chyler Leigh as Alex Danvers
- Katie McGrath as Lena Luthor
- Zachary Quinto as General Dru-Zod
- with Brenda Strong as Lillian Luthor
- and Olivia Wilde as Susannah Russo
Special Appearance ByEdit
- Calista Flockhart as Cat Grant
Special Guest StarsEdit
- Helen Slater as Eliza Danvers
- Jeremy Jordan as Winn Schott (video)
- David Harewood as J'onn J'onzz
- Elizabeth Tulloch as Lois Lane
- D.B. Woodside as Desaad & Darkseid
- Robert Gant as Zor-El (in Rao's Light)
- Manu Bennett as Kalibak
- Jason Momoa as Lobo
- Daniel Sharman as Lor-Zod
- with Sam Witwer as Ben Lockwood
- and Alexandra Daddario as Cameron Chase
- Antagonists: Reign, Darkseid
- Title Meaning: By this episode, both Kara and Reign have been referred to by the titular epithet. The two characters also fight to establish who is the true holder of the title
- This episode was the second candidate for the series finale.
- Kara, Alex, James, Winn, J'onn, Cat, Alura, Astra, Eliza, Zor-El, Jor-El, and Vasquez are the only characters to appear in the first and last episodes of the series
- This is the series finale.
- This episode marks the final appearances of Winn Schott and J'onn J'onzz.
- This episode takes place on August 25, 2020.
- Kara is the only character to appear in all 73 episodes.