|Season 4, Episode 18 (80)|
|Supercousins||Krypton's Last Stand|
PART 1 OF 3: ZOD RETURNS- Dru-Zod and Ursa escape the Phantom Zone, bringing with them hundreds of angry Kryptonians. Kara Danvers, Alex Danvers, Karen Starr, and the rest of the DEO stave off the invaders for as long as possible while James Olsen andLena Luthor try to save the civilian population. Meanwhile, in Metropolis, Lois Lane meets with a woman interested in her connection to the Superfamily.
- Melissa Benoist as Kara Danvers/Supergirl
- Chyler Leigh as Alex Danvers
- Jeremy Jordan as Winslow Schott
- Katie McGrath as Lena Luthor
- Zachary Quinto as General Dru-Zod
- Tyler Hoechlin as Clark Kent
- Odette Annable as Reign
- Jenna Dewan as Lucy Lane/Superwoman
- with Claire Holt as Karen Starr/Power Girl
- and Mehcad Brooks as James Olsen/Guardian
Special Guest StarsEdit
- Jon Cryer as Lex Luthor
- James Remar as Quex-Ul
- James Marsters as Bertron
- Emmanuelle Chriqui as Sarah Essen
- Rachel Brosnahan as Kate Kane
- Rachel Nichols as Onyx
- Elizabeth Tulloch as Lois Lane
- Minka Kelly as Dawn Granger
- with Michael Rosenbaum as Lex Luthor (Earth-30)
- and Sarah Shahi as Ursa
- Brenda Strong as Lillian Luthor
- Wallis Day as Nyssa-Vex
- Briana Venskus as Agent Susan Vasquez
- with Katheryn Winnick as D.I.S.C.O.R.D.
- and Dianna Agron as Major Raya Zod-El
- and Alexandra Daddario as Cameron Chase
- Antagonists: Dru-Zod, Ursa, Bertron
- First appearance of Bertron.
- This episode takes place on July 29, 2020.