Jinx / Powder

Powder is a bright, inventive young girl from the undercity of Zaun, the younger sister of Vi and the adopted daughter of Vander. After a catastrophic failed heist leads to Vander's death and Vi's imprisonment, Powder is abandoned — her sister's last words to her being "You're a jinx." This rejection, combined with the guilt of inadvertently causing the deaths of people she loved, shatters Powder's psyche.

Adopted by the manipulative Silco, Powder transforms into Jinx — a chaotic, brilliant, and deeply unstable weapons expert who terrorizes Piltover. Jinx is defined by her fractured mental state: she hallucinates, talks to imaginary versions of dead loved ones, and oscillates between childlike vulnerability and explosive violence. Her relationship with Silco becomes a twisted father-daughter bond that fills the void left by Vander and Vi.

When Vi returns, Jinx is torn between the sister she desperately wants back and the person she has become. The show's climactic dinner scene — where Jinx forces Vi and Silco to sit at a table together — is a heartbreaking illustration of her impossible situation. She cannot be Powder and Jinx simultaneously. Her final choice to embrace Jinx and fire the mega-death rocket at the Piltover council is one of animation's most devastating character moments.