Ettin

Ettins are large two-headed giants that are extremely unintelligent and violent in the northern land named Ettinsmoor. These creatures were once civilised ones that built ancient cities and bridges around the Wild Lands of the North during the Age of Conquest. But worse, during the Age of winter, they all started to become uncivilised and became violent with stupidity and vicious temperament.

History
During in 1014, the Ettins attacked in raided areas at the northern edge of the Narnian Empire. The Narnian King Peter declared war against the Ettins where they fought them at the Ettinsmoor War. Centuries later after Caspian X becomes king of Telmar and Narnia, Ettins were again entering on the Narnian territory. Caspian X along with the Telmarines and the Old Narnians working together now, all fight against these creatures in 2304 and forced them to leave.

Books
Before the Ettinsmoor War, some Ettins traveled to Narnia to become loyal to the White Witch where they serve her in her army to fight in the First Battle of Beruna against Aslan's army, The Lion, the Witch, and the Wardrobe. One Ettin named Pire who was a threat to Archenland, fought against a brave giant named Olvin. Olvin managed to defeat Pire and later turned him into a mountain.