What is the name of Jet's rebel group?

Jet’s rebel group is called the Freedom Fighters.

The Freedom Fighters are a band of young Earth Kingdom rebels led by Jet. They operate in forests and villages affected by the Fire Nation’s occupation, attacking soldiers and disrupting military operations. Their members include Smellerbee, Longshot, Pipsqueak, the Duke, and Sneers.

The group is introduced in the Book One episode “Jet,” where Jet presents himself as a heroic resistance leader. His hatred of the Fire Nation comes from the destruction of his home and the deaths of his parents. However, the group’s tactics are morally troubling: Jet is willing to endanger civilians, including people who may not support the Fire Nation.

A frequent mix-up is choosing the Kyoshi Warriors, Dai Li, or Order of the White Lotus. The Kyoshi Warriors are Suki’s protectors, the Dai Li are Ba Sing Se’s secret police, and the White Lotus is an international society of masters. The Freedom Fighters are specifically Jet’s guerrilla band.