Final answer:
The name of Firelord Ozai's mother is not revealed in the animated series Avatar: The Last Airbender, as the show does not delve into her character.
Step-by-step explanation:
Firelord Ozai's mother is a character from the animated television series Avatar: The Last Airbender, which delves into a rich fantasy world based on various elements of Asian culture, mythology, and martial arts. However, the name of Ozai's mother is not mentioned in the TV series. The focus on lineage typically highlights his father, Azulon, and grandfather, Sozin, due to their significant roles in the history of the Fire Nation. The absence of information about Ozai's mother in the series leads to the conclusion that her name and story were not deemed crucial to the main narrative concerning the protagonists and key antagonists.