Recently I found this Concept Art, searching for more info about the upcoming God of War. This photo should be the cover of Gameinformer and shows Kratos struggling with an almost demonic looking creature.
If I look at the seize of the creature, this would be more likely a boss fight.
And since it features wings, a scorpionlike tail and wings and the lion head I believe this is a manticora.
Let me know what you think.