Krypton Season 1: Ranking Every Major Character From Worst To Best
13. Jax-Ur
Black Zero, a terrorist organization aiming to overthrow Kandor's government, were omnipresent throughout Krypton's first season. However, the group's leader, Jax-Ur (formerly Sela-Sonn), did not make her first appearance until the season's final third.
What we managed to learn about her in that short amount of time is fairly interesting. We learn of her connection to the Science Guild and Daron-Vex, as well as how it was both Val-El and Jax that Daron betrayed when he handed the former over to the Voice of Rao. This, of course, prompted Jax to start Black Zero in the first place.
Jax-Ur also plays a significant role in the season finale, providing a shocking revelation to Daron's daughter, Nyssa, about her past.
All that said, while Jax-Ur does help tell the stories of other characters in Krypton's first season, she doesn't really get the chance to come into her own. And like Doomsday, she is likely to have a much bigger role in season two.