The Avengers Ultimatum

The Avengers Ultimatum is a hybrid uniquely it's own. To defeat a powerful enemy, the Avengers were forced to come up with something new. Tony Stark(Iron Man) came up with the Avengers Ultimatum. Stark tried pulling it off with technology, but that didn't work out very well, so they tried using Loki to do it. Loki couldn't pull it off, but he said that Odin could. Odin managed to create the hybrid Avengers Ultimatum(AU).  The AU successfully defeated their enemy, but then turned against the Avengers. The Avengers were terrified at this thing they created, and desperately begged Odin to get rid of it. When Odin couldn't do it, they tried another desperate move. They released enemies such as the Abomination, and Carnage(Who has now put himself back together), and set them against the Avengers Ultimatum. They eventually defeated the AU, and were sent back to their containment spots.