She is in love with Tarzan.
In the original novels, a high priestess of a blood cult who fell in love with Tarzan. In her adaptation for the series, she is a former member of the Waziri tribe and an utterly vicious sorceress who rules over the abandoned city of Opar, where she lords over the Leopard Men, leopards whom she has changed into humanoid form to serve her. She falls in love with Tarzan after he comes to rescue Jane's father from the Leopard Men, who were capturing males as potential husbands for La. Her attempts to seduce Tarzan fail every time, as his loyalty is firmly with Jane, and in almost every encounter La is trying to hurt Jane and take Tarzan for herself. She could actually be considered Jane's rival for Tarzan's affections. Her magic staff is eventually shattered by Jane, turning La to dust and the Leopard men back into ordinary leopards. Her spirit still lingers and tries to steal Jane's body and restore her staff. After some forced body switching and getting inside Tarzan, she is eventually forced inside the body of a rat and the staff is taken by a Waziri elder who was determined to end her evil, trapping her in the rodent form.