Jamoan is the leader of the opposing army that besieges Oroonoko’s troops. For most of the fight, the lovesick Oroonoko pines for the presumed death of Imoinda. When Oroonoko returns to his senses, however, he helps defeat Jamoan’s army, seriously wounds Jamoan, and then retains him as an attendant. They become good friends, and Jamoan helps cure Oroonoko of his melancholy over losing Imoinda.