Kraken

Rumors say that deep, deep within the bowels of Freedom City, lurks a beast of horrific size. Hardened adventurers and grizzled warriors shrink back at the mere mention of its name...THE KRAKEN

What you need to know

ITS A FUCKING KRAKEN!!! Only a large party of experienced and well armed players can take him down. Doing so nets some nice xp and a unique kill journal. You can also then butcher him for various useful things, including a kraken hide, should you want to make a kraken hide couch.

The Kraken also drops a trophy (the beak) when butchered.

Additionally, calamari steaks can be used to make tasty fish stick platters. Fish sticks don't rot while in the platters, interestingly enough.

WARNING The Kraken is located underwater, you dumbass. Bring some sort of breathing gear (artificial gill, scuba tank, HEV suit) or have Eelskin in order to not drown like an idiot.