Prince Zuko is the eldest son of the king-fire Ozai and his mother named Ursa. Zuko has a younger sister named Azula. Prince Zuko from Avatar Aang hunt after expelled by his father for questioning the decision of the court of the king in a close battle in the royal palace fire.
Prince Zuko tried hard to find an avatar that can catch it and hand it over to his father king Ozai fire so that it can be accepted back in the palace and became heir to the throne of fire.