"Listen, Smellerbee. Maybe we've been thinking about this all wrong. What if Yu Dao is neither Fire Nation nor Earth Kingdom?"
— Sneers explaining his new stance on the Harmony Restoration Movement to Smellerbee.
Sneers was a member of the Freedom Fighters who was very loyal to its then-leader, Jet. As scout on the team, it was his job to watch for approaching Fire Nation soldiers; he would sound a bird call signal when any threats were spotted. During his stay in Yu Dao, he began a relationship with Kori Morishita and eventually became a member of the Yu Dao Resistance to protect both his relationship and new home.
As a young child, Sneers' parents were killed by firebenders, which eventually led him to join Jet and the Freedom Fighters.
When Jet and the other Freedom Fighters ambushed a camp of some Fire Nation soldiers, Sneers jumped out of a tree to engage two armed soldiers without wielding any weapons himself. He relied on pure physical strength to push the first soldier up in the tree and throw the other away. He appeared to be unfazed by the excitement of battle, as he started eating some of the soldiers' leftover food as soon as they had retreated. Sneers later helped Pipsqueak and The Duke load a cart with the stolen supplies, which included blasting jelly and jelly candy, among other items.
Sneers was among the group of Freedom Fighters that accompanied Jet in carrying the blasting jelly toward the dam at night. While Jet, Pipsqueak, and Smellerbee occupied themselves with keeping Sokka from warning Aang and Katara about Jet's plans to flood the nearby occupied Earth Kingdom village of Gaipan, Sneers, Longshot, and The Duke placed the barrels of blasting jelly at the base of the dam. When they completed their task, one of them gave Jet a bird call signal, alerting him to the fact that they were done and that he could begin the next phase in their plan.
However, when Jet, Smellerbee and Longshot went to Ba Sing Se, Sneers traveled to Yu Dao to live with his uncle. There, he fell in love and eventually began a romantic relationship with Kori Morishita, an earthbender of Fire Nation descent.
After the end of the Hundred Year War, Sneers somehow met up with Smellerbee and Longshot at Yu Dao. Still feeling loyalty to their cause, he hid his relationship with Kori and began to protest the Fire Nation's continuing occupation. He wanted the Fire Nation to leave Yu Dao and was prepared to support Smellerbee in her threat of violence if there was no deal made within three days following the Avatar's arrival in the city.
However, in the subsequent time Kori began missing out on their dates to train with her cousins, a mix of both earthbenders and firebenders. When Sneers came to talk about this and revealed his involvement with Smellerbee's protest movement, Kori threatened to leave him if he did not withdraw his support.
Sneers made up his mind and decided to side with the Yu Dao Resistance. Smellerbee condemned his actions as traitorous, though Sneers explained that Yu Dao was neither Earth Kingdom nor Fire Nation, and that he wanted to stand up for what he believed to be a different place. Together with Kori, he managed to convince Avatar Aang of his new-found realization, effectively aiding to halt another war before it could start.
Sneers later joined his girlfriend and her parents, several government officials, and a partial Team Avatar at a meeting at the Yu Dao governor's estate, where they listened to an Earth Kingdom professor discuss theories in government.