|The Heaviest Burden|
|Season 9, Episode 2|
|I'm Gonna Make You Suffer||Have It All|
- Melissa Benoist as Kara Danvers/Supergirl
- Chyler Leigh as Alex Danvers
- Katie McGrath as Lena Luthor
- Odette Annable as Samantha Arias & Reign
- Olivia Wilde as Susannah Russo
- Tyler Hoechlin as Clark Kent/Superman
- Claire Holt as Karen Starr/Power Girl
- Adelaide Kane as Ava Blackwood (voice)
- Minka Kelly as Dawn Granger/Dove
- Emmy Rossum as Zaora Dru-Zod
- Laura Benanti as Astra In-Ze (flashbacks)
- Mehcad Brooks as James Olsen (voice)
- and David Harewood as J'onn J'onzz/Martian Manhunter
- Antagonists: White Martians
- This episode is J'onn-centric.
- This episode takes place on March 14, 2024.
- Ava and James do not physically appear but their voices are heard.
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