|Season 3, Episode 3 (36)|
|No Longer The Last||Power Girl|
DO THEY COME IN PEACE?- As Alura and Astra continue showing Kara and Clark around Kandor, J'onn infiltrates the city under suspicions that Alura does not desire genuine peace with humanity. Elsewhere, Lesla-Lar steals into the Labor Guild's headquarters searching for information about how to defeat Brainiac. Karen escapes from Kandorian guards.
- Melissa Benoist as Kara Danvers/Supergirl
- Odette Annable as Reign
- Dianna Agron as Major Raya Zod-El
- Laura Benanti as Alura Zor-El & Astra In-Ze
- Wallis Day as Nyssa-Vex
- Robert Gant as Zor-El
- Claire Holt as Karen Starr/Power Girl
- Tyler Hoechlin as Clark Kent/Superman & Jor-El
- Chad Lowe as Thomas Coville
- Katie McGrath as Lena Luthor (voice)
- Zachary Quinto as General Dru-Zod
- Emmy Rossum as Zaora Dru-Zod
- Skyler Samuels as Rei Kon-Vex
- and David Harewood as J'onn J'onzz
Special Guest Star
- Harry Lennix as Commander Fer-Gor
- Chris Vance as Non
- Tracy Spiridakos as Lesla-Lar
- Paige Turco as Lara Lor-Van
- Casper Crump as Vandal Savage
- Matt Barr as Tyr-Van
- Alessandra Torressani as Young Jindah Kol Rozz (flashbacks)
- and Jeffrey Dean Morgan as Ran-Zod (flashbacks)
- Antagonist: Dru-Zod
- With the exception of Vandal Savage and Thomas Coville, no human characters appear in this episode.
- This is the first episode since Pilot that Jor-El physically appears. In a nod to Smallville, he is portrayed as looking identical to Clark in his youth.
- This episode is set entirely within Kandor.
- This episode takes place on June 3, 2020.