King David
Hushai said, “You know that your father and his men are mighty men, and that they are enraged, like a bear robbed of her cubs in the field. (2 Samuel 17:8)
Hushai is pretending to advise the conspiring Absalom in the way to defeat King David, but he is actually an agent sent by David. He defeats Ahithophel's counsel by comparing David to an enraged bear.