Among the many Fixers of the Backstreets, she was one of the few who could go toe to toe with the Head and the Claw. She was called the Red Mist among the Backstreets' denizens. That was a name she earned protecting us from all kinds of threats and maneuvers from the outside.

Kali (칼리, Kali) was a legendary Color Fixer titled The Red Mist from the Backstreets of District 23. She was renowned throughout the City for her immense strength and her sense of justice as a protector of the weak. After meeting Carmen, she joined the Seed of Light Project team, and through their research she gained the E.G.O. weapon Mimicry and became able to manifest her own E.G.O. as well.
Kali was ultimately killed in the Outskirts defending the research team against an attack by the Head, though she killed two Claws and mortally wounded the Arbiter Garion in return. To the City, she simply disappeared, and is memorialized as a hero. Gebura is the "reincarnation" of Kali, having been created from her remains and possessing her memories.

information from the Library of Ruina wiki