Ogre

This creature, unofficially known as the Cyclops is an enemy in Dark Souls II

Location
So far, one Cyclops was shown to be located in an underground hallway, possibly the Undead Purgatory. It is located behind a locked wooden cell door

Description
A large green, blubbery beast with stubby arms and a single eye above its mouth. Despite its obese appearance, it is very powerful. Strong enough to break through stone walls.

Strategy
From what is known, the Cyclops attacks with surprisingly rapid claw strikes, but moves slowly. It is wise to circle around the beast and attack from the sides instead of engaging head on.