Its called "the arena" so I doubt it'll have one giant boss, especially since the house of wolves has no Kell. It'll probably be round after round, and the last round is gonna be a few sub-giant bosses, which would make it equally as hard. I predict that the waves will be: 1. Wasps 2. Hobbes 3. Balverines 4. Undead 5. Bandits 6. Earth trolls 7. Rock trolls 8. A giant scorpion that shoots lasers And for the last round you'll be forced to fight your best friend.