Gorlag is a twisted creature with the ability to control Giant Ants living in Gorlag’s Cave. He was once a man who accidentally killed his wife and became what he is now. A group of soldiers sent by the Captain were killed by Gorlag using his ants. The only one spared was Harlef, because Gorlag claimed he couldn’t kill "one so young" and locked him up. Gorlag refuses to free him unless the player retrieves a stone stolen from him by Scythe.
It turns out the stone was created by Scythe and contains Gorlag’s soul forcing him to remain as an immortal twisted creature. Upon the stones return Gorlag dies.