Perhaps the most well-known Amalekite is Haman from the Purim story in Megillat Esther.
Haman is described as the Agagite – which is understood as being a descendant of Agag, the evil king of Amalek during the time of King Shaul.
Haman rises to power in Ahashverosh’s court by promising to pay the Persian king a handsome amount of money.
Incensed by Mordechai’s refusal to bow down to him, Haman plans to wreak revenge on Mordechai and Mordechai’s nation by orchestrating a royal decree to annihilate the Jewish People.
