Agent Coulson: Agent Coulson is one of S.H.I.E.L.D.'s top agents. His experience in the field and working with super-powered beings has prepared him to deal with almost any situation. But is he ready for Earth to become a battleground for the universe's mightiest warriors?

Frost Giant: Even the mightiest of Asgardians knows that it is best not to trifle with the Frost Giants. Their fearsome reputation is known throughout myth and legend... a race one should think twice about crossing. What do the Frost Giants have in store for Asgard and Thor? Will the peace that has been kept for many years be suddenly broken?