Warg in the New Line film
Wargs were wicked and greatly feared beings of Eriador. Wargs frequently attacked the good peoples of Middl-Earth. Some lurked, waiting for innocent peoples to wander into their territory. Wargs would eat the people. During the War of the Ring, Saruman the White kept Wargs in a chamber under the Tower of Orthanc. He would release them in order to attack. In the First Battle of the Fords of Isen, Wargs and their riders attacked. In the Second Battle, they confused the forces of Elfhewlm and Grimbold in order to destroy them. Meanwhile, Wargs attacked Rohirrim riders travelling to Helm's Deep. One Warg almost killed Aragorn, but he was saved by the Horse Brego who was sent by Arwen. Soon the Battle of Helm's Deep occurred and the Uruks were destroyed. Wargs then fled to Mordor to serve Sauron. One was ridden by Gothmog At The Battle of Pelennor Fields. When the Battle was lost, The Wargs fled into Mirkwood and were never seen again.