Krypton Season 1: Ranking Every Major Character From Worst To Best
11. Ona
Ona may be a character who only existed to get brainwashed by Brainiac at the end of the day, but she was also an incredibly efficacious one.
After Ona's mother falls victim to the Collector of Worlds, she finds herself in the care of Seg-El and Kem. It is during this time that she served as a rather effective confidante to Kem, which helped flesh his character out, as well as create a very convincing familial bond between the two.
She's a character who's easy to sympathize with and you genuinely worry about her well-being when it becomes clear that she is falling into Brainiac's clutches like her mother. In turn, her eventual death is a genuinely heartbreaking and impactful moment.