Wulf Dunlending is a secondary antagonist in 'The Lord of the Rings' legendarium, appearing in the appendices of 'The Return of the King.' He is the son of Freca and a leader of the Dunlendings, who invades Rohan and captures Edoras during the reign of King Helm Hammerhand. Driven by vengeance for his father's death and ambition, Wulf's actions lead to a significant conflict known as the Long Winter. His role is crucial in the history of Rohan, exemplifying the enmity between Rohan and Dunland.