DISCLAIMER: I do not own Spider Man, the Avengers or Prototype.

Alex Mercer consumed a SHIELD agent, gaining a new disguise. He then walked out onto the deck of the helicarrier, where Captain America stood. Alex grabbed the Captain by the neck, picking him up off the deck and glaring at him. Captain America attempted to free himself, but Alex Mercer was far stronger than the Captain. Tendrils burst out of Mercer's back, and Mercer threw Captain America onto the deck. Mercer's tendrils attacked Captain America, while Captain America raised his shield to protect himself.

The door to Fury's command centre flew open, and Captain America ran in, before turning to face the door, shield at the ready. "Mercer's here! Get ready!"
Thor went out the door, searching for Mercer, leaving Captain America in charge. Peter moved up next to Captain America, while Bruce Banner stood back, next to Black Widow. Suddenly, Captain America slammed his shield into Peter's face, stunning him, before changing into Mercer. Mercer charged at Banner and Black Widow. Black Widow jumped over the top of Mercer, while Banner started to change into the Hulk. Before the transformation was anywhere near complete, Mercer's blade slashed through Banner, and Mercer consumed him. With a cry of shock, Mercer fell to his knees. "The power! The Hulk's power is incredible!"

Black Widow drew a pistol and started shooting Mercer, but the bullets bounced straight off him. Mercer's blade turned into a tendril, lashing at Black Widow, splitting her in half and consuming her. Mercer then attempted to consume Peter, but Thor appeared. Thor fired lightning at Mercer, but Mercer showed no sign that it hurt him at all. Mercer charged at Thor, and Thor also charged, but to his horror, Mercer cleaned him up, flinging him straight onto his back. Mercer gripped Thor by the head, punching him hard enough to crush his armour. Thor attempted to force Mercer back, but Mercer was immovable, now possessing the strength of the Hulk, except that unlike the Hulk, he had total control over it, essentially making his strength limitless.

Thor was thrown straight out of the helicarrier, crashing through several walls in the process. Mercer landed on Thor, driving a blade through his chest. Mercer attempted to consume Thor, but realised that he couldn't. Mercer put his fist through Thor's chest, but still couldn't consume the Asgardian. Somehow, Thor's genetic code was impossible to consume. Mercer returned to the helicarrier, but Peter had already left, as had Fury and the rest of the crew.

Peter stood in Xavier's mansion, waiting for the professor. The door opened, and Charles entered, looking like nothing but a man in a wheelchair, but possessing power greater than almost anyone else. "Peter, I already know your plight. I have already told Jean, Scott, Storm and Logan to call everyone back here."

Charles rolled into the room, several mutants and other heroes standing before him. "The monster Alex Mercer is a very dangerous creature. He can turn into whoever he consumes, and has already consumed Bruce Banner, Black Widow, Steve Rogers and Eddie Brock. He now possesses strength like that of the Hulk, as well as the abilities he already possessed. He also has total knowledge of our operation now. He knows everything the people he consumed knew."
Thor stood, stepping to the front. "Mercer will do everything he can to consume the powers of those he confronts. Having already consumed the Hulk, he will be very dangerous, and while he cannot consume me, if he manages to consume Xavier or Jean there is no telling how mighty he could become."

Alex Mercer stood outside the mansion, looking in at the top floor, where they were talking about dealing with him. Charles was at the window, and he turned to look at Mercer. Alex didn't even bother trying to disguise himself. He could never fool the professor. Alex faced a dilemma now. If he faced Xavier, he would be no match for the mutant. He knew the only way to attack was to find a way to consume Jean Grey, as her power would allow Alex to fight the professor. If he was able to consume the professor and Jean, his power would be beyond reproach. His only fear was that he couldn't consume Thor, and he knew there were others like Thor. He could defeat Thor, but from the collective memories of those he had consumed, his biggest fear was Ghost Rider.