Amalekite

Descendants of Esau's grandson Amalek, the Amalekites were a persistent thorn in Israel's side. They ambushed Israel from behind during the Exodus, targeting the weakest and most vulnerable (Deuteronomy 25:17-18). God declared ongoing war against them. Saul lost his kingship partly because he failed to fully defeat them. In Esther, Haman the villain was an Agagite — likely descended from the Amalekite king Agag.