"This is what you call progress? The only thing you did was bring destruction and evil to this forest. You don't understand the value of nature, and now you must pay the price."
"Hatred works as a subtle poison. By the time it withers the branches, it has already killed the roots."
— Character tagline
Sen is the current incarnation of the Avatar and the immediate successor of Avatar Korra. He was born in Lan Village in the southern part of the Earth Kingdom. Despite being born an earthbender, Sen's mother Laoka, a healer who had been banished from the Southern Water Tribe, suppressed his bending abilities as she was aware of his true identity as the Avatar and wished to keep his presence hidden from the White Lotus for as long as possible. Ultimately, Laoka was forced to flee from Lan Village to avoid being found by the White Lotus, and after she disappeared a ten-year drought struck the peninsula. Assuming Sen to be the source of the drought, the people of Lan Village attempted to sacrifice him to the heart of the forest when he was a child in order to appease the spirits. As a result, Sen bears a deep-seated distrust of all humans, with the exception of his father, Ganlao, with whom he has maintained a strong relationship. Sen lives in solitude, avoiding human contact whenever possible and very rarely emerging from the depths of the woods to interact with the outside world. Despite his strong connections to the natural environment, Sen is still unaware of his identity as the Avatar and is thus unable to access his innate bending abilities. Instead, he relies upon the powers of Ehuang, the water spirit who protects Lan Forest and who entrusted him with waterbending abilities in order to guard the forest in her place. His main companion is his tiger elk, Taruk.