Wikipedia
Ammoron
Ammoron should not be confused with Amaron, Ammaron, Amoron, or Moron (Book of Mormon) three other Book of Mormon figures with similar names.
According to the Book of Mormon, Ammoron was a Nephite traitor. He was a descendant of Zoram and succeeded his brother Amalickiah as the king of the Lamanites. Amalickiah, as king, had started a major war with the Nephites which the Nephites had hoped would end with his death. However, Ammoron seized power and became determined to carry-on the war of his brother. Eventually his armies were defeated in and he was slain by Teancum.