From UO Second Age
These giant one-eyed monsters are usually seen in the mountains far to the west. They're somewhat fast for their height, and can be considered an Ettin's bigger brother. Don't go one-on-one with a Cyclops unless you are a seasoned melee fighter. Keep in mind that with it's huge hammer the Cyclops will damage armor and bring down your stamina, which will slow down your melee attack.
Cyclops/Titan Valley in T2A
200 to 250 gold, Potions, Arrows, Gems, Magic Items