Afiko (Earth-2213)

Afiko, known as the Betrayer, was an air nomad monk from the Southern Air Temple who revealed the location of his home to the acolytes of Fire Lord Ozai, who then proceeded to raid and destroy it during the Air Nomad Genocide. Infamous for his betrayal, Afiko was charged with treason in 5 AG and then executed by decree of the Third Hokage Hiruzen Sarutobi.

Bitter jealously
Born in the Southern Air Temple in 54 BG, Afiko grew up in a normal life until he discovered Kushina Uzumaki's status an Avatar. Disgusted and envious, Afiko betrayed his own people by revealing the location of the temple to the acolytes of Fire Lord Ozai.

The acolytes stormed the temple and slaughtered all residents, from the monks, to the women and children, but they were too late to catch Kushina, who was able to escape shortly before the massacre. Afiko was instrumental into ensuring the genocide of his fellow air monks, which earned him the name "traitor" across the land. The treacherous monk died in 3 AG, not long after Kushina's death, being executed by decree of the Third Hokage Hiruzen Sarutobi for treason.