DISCLAIMER: I don't own Spider Man or Prototype.
Peter Parker walked down the street, not liking what he saw. A group of soldiers were dragging a malformed, semi-human creature into a van. The man responsible for this entire mess was apparently a terrorist named Alex Mercer. As Peter was walking, his spider sense went off, but there was no immediate danger. A man in a hooded jacket, with a leather jacket over the top, bumped into Peter, knocking him back. Peter narrowed his eyes suspiciously. There was something very strange about that man. A normal person would not have been strong enough to knock Peter back like that. Furthermore, his spider sense appeared to be reacting to that man's presence. Peter turned, following this man through the crowd.
The man proved harder to follow than Peter had anticipated, as he easily pushed everyone aside, and moved faster than a normal person could in a thick crowd. The man turned a corner, and when Peter followed him, he had vanished. Peter moved further into the alley, when the man dropped down beside him, having been hanging from one of the brick walls. "There some reason you're following me, kid?"
Peter was uncomfortable, as he knew this man was stronger than human, but he did not know the extent of the man's power. "You seem suspicious. You pushed people aside as if you're trying to get somewhere too fast. At best, you're a bully. At worst, you're a monster. I'm guessing it's the latter."
The man chuckled, a harsh, evil sounding chuckle. "If I didn't know better I'd swear you wanted to fight me."
Peter stepped forward. "I will if I have to."
Peter fired webs at the man, but the man's hands turned into large, razor-sharp claws, slashing through the web Peter threw at him. The man attacked, his hands turning to hammers. Peter jumped into the air, narrowly escaping the attack. The man then turned his left hand into a whip, swinging it at Peter, while changing his right hand into a large blade, readying it for a charging attack. The man swung his blade at Peter, but Peter jumped over it, before landing behind the man, punching him in the back. Peter may as well have hit a brick wall. The man was slightly hurt by the hit, but nothing serious. The man rounded on Peter, swinging the massive blade. Peter dodged the attack, wrapping the man's head in webbing. Peter then punched the man in the face, but it had little more effect than his previous punch. The man then lowered into a crouch, grunting with pain. "Constipated, huh? No wonder you're so grumpy. A little liquorish might help with that."
Peter jumped up to the roof when the man released the barrage of tendrils he had been struggling to attack with. The tendrils tore the ground and the walls to pieces, but Peter escaped unscathed. As Peter was about to go back to attack the man, a fresh tendril lashed at him, narrowly missing him, and cutting up the part of the roof he had been standing on. Peter turned to see the man jump onto the roof with him. Peter fired webs all over the man, before using the web to rodeo him off the building. The man crashed through the roof of a nearby building. "Someone isn't a very good fighter. You should be much tougher than me."
The man reappeared at the top of the building, glaring. "I am, kid. You've just gotten lucky. As of right now, your luck has officially run out."
The man jumped over to the building Peter was on, baring his razor-sharp claws, ripples going across his body as if it were churning water. "Ready to get eaten alive, kid?"