|Season 5, Episode 11|
|War Sweater||Somebody Help Me|
THE SON OF DARKSEID- When Darkseid's firstborn son Kalibak makes his way to Earth, Desaad sees a way to rid himself of the primary obstacle to the Dark Lord's return and pits Kalibak against Supergirl. As the DEO scrambles after the Scourge of Apokalips takes out their bases, Kara and Karen learn why Desaad wants them dead.
- Melissa Benoist as Kara Danvers/Supergirl
- Chyler Leigh as Alex Danvers
- Katie McGrath as Lena Luthor
- Odette Annable as Reign
- Tyler Hoechlin as Clark Kent (credit only)
- with Claire Holt as Karen Starr/Power Girl
- and Mehcad Brooks as James Olsen (credit only)
Special Guest StarsEdit
- DB Woodside as Desaad
- Antagonists: Desaad, Kalibak, Reign
- Clark and James do not appear in this episode.
- Kalibak possesses the body of Earth-1's Slade Wilson, last seen in the present in You Have Failed This City.
- This episode takes place on December 20, 2020.