The Goblin Leader is an enemy found within the Leader's Quarters.
This enemy is fairly easy, despite its imposing title. He does have mixed protections, but generally weaker to slash damage.
His weapon does Bludgeon and Slash damage, so come prepared.
It is also possible for the Goblin Leader to duel wield two Throwing Axes.
He can have fairly high dexterity, so watch your health.