Abbadon The Endbringer is the creator of : 'The Army Of Abbadon'.
Once in the nether. A demon lived called Abbadon. The Herobrine itself ordered Abbadon to make a city in this realm. He gained a full name, Abbadon The Endbringer and got sended here. He created a castle called : 'The Castle Of Abbadon.' The city is still in maintance, Look down the page for photo.