Kurisu

Kurisu is the sister of Sulik, a young tribal girl kidnapped by slavers. Although Sulik's quest was to find her, he never did.

She somehow appeared many years later somewhere in the Southwest. It is known that the Prisoner was able to "redeem her", but no explanation of this was given so far. She might have been connected in some way to Hecate.

Appearances in games
Kurisu was first mentioned in Fallout 2, but was not given a name. She was initially meant to be found in the game, but this quest was eventually unfinished. She was to appear in Black Isle's Fallout 3 poject (Van Buren), but it was cancelled. Her name was revealed in the Van Buren leaks. It is not yet known if any of her story from Van Buren will appear or be referenced in the upcoming Fallout 3 by Bethesda.