Jinx, born as powder, is a notorious Zaunite criminal and vi's younger sister. when she was a little girl, her parents were killed in a failing uprising against piltover, leading vander, the upspoken leader of the undercity, to adopt her and vi as his own daughter. after series of events forced jinx and her sister apart in more ways than one, she was fundamentally and irrevocably changed, transforming her into the demented killer she is today.