Born into a noble family in Noxus, Katarina was trained in daggers from an early age.

That fiery willful little girl has grown up, beautiful and deadly. Responsibility and loyalty to the family temper the fiery character. Facts have long proved that when there is a disagreement between self and responsibility, Katerina's fiery passion can become a double-edged sword, hurting others and hurting herself. As the daughter of a Noxian general, Katarina was free-spirited by nature, and young Katarina received the best care in every way. In battle, she finds herself drawn to the blade, and her talent shows. Katarina was trained to be the deadliest assassin in the Noxian army, making the entire family proud.