Ettins

Huge, two-headed abominations, whose life goal is to plunder, murder and enjoy their treasure. Ettins are primitive, huge brutes, who throw big boulders at their victims. However, should a Ettin be overcome, lots of treasure await the adventurer for all the trouble.

They can be found in the forests or the mountains.

Lore
''These evil two-headed aberrations of nature can cast huge boulders down upon thy party, causing immense damage. It is best to try to kill them with long-range weapons and spells. A large clan of Ettins is said to live along the Serpent's Spine.''

- from "The History of Britannia", Ultima IV

''Strange two-headed creatures, ettins hurl large boulders with enough strength to do considerable damage. Though not magical, they are quite hardy and often carry a good many interesting belongings.''

- from "Book of Lore", Ultima V