>>4328141211) After her parents were killed, she devoted herself to becoming a frightening symbol of fight when a fight crashed through her living room window
12) She originates from an extraterrestrial race of fighters who fired her from their doomed planet so she would survive
13) She ate a distilled extract of the rare 'Fighto' fruit of the mysterious jungle
14) She was a doctor, but when her hands became too injured for precise surgery she journeyed to the mountains and learned to use them to club people to death
15) Fighter is the royal title of her hidden nation of secret warriors. She obtained the title and her fighting powers by, uh, fighting the other tribal chiefs.
16) She's an artificial being built only to fight that developed a conscience.
17) She and her fellow prison inmates found a bunch of enchanted fighting gear, which gave them fight powers
18) She comes as a representative from an island of fighters who reject the ways of the world of non-fighters
19) She's actually a ghost of a great fighter who has to possess people to use her fighting abilities
20) She was murdered on a battlefield but her consciousness fused with it and she awoke as a thing half-human, half-fight