Ozai

Ozai is the Fire History teacher in School of Benders. He is cruel, cold and selfish. He hates the gang and Ozai usually suffers for punishing them.

Story
He first appeared in Chapter 1 to punish Aang and Sokka for being late. He sent them to detention and made them do useless tasks.

Trivia

 * Fans have noted he is similar to Severus Snape in Harry Potter fame
 * He does have a good side as he betrayed Sozin for Roku.
 * His clear favorite is Azula.