Nate arrived at school early in the morning. He needed to finish a school report in the library, but first was going to drop off his new gym clothes in his locker. Nate was an average guy, much more bookish and nerdy than athletic for sure. He wore simple blue jeans and a t-shirt. He was a bit overweight, but didn't really care. He couldn't help but marvel at how quiet the school still was. He walked into the locker room and started doing the combination on the lock when he noticed the locker next to his was busted, with the door hanging partially open. Nate threw his bag of new gym clothes in his locker and shut the door.
He cautiously opened the door of the locker next to his, revealing a large pile of gelatinous black ooze.
"What the..." wondered Nate as he slowly reached out and touched it. Suddenly, the ooze sprang to life and grabbed ahold of Nate's hand and began working it's way up his arm.
Nate cried out as he tried to pull away. The ooze pulled him back towards the locker and kept working his way over his body. He cried out again as small tendrils penetrated his flesh. He pulled away again, this time succeeding in pulling away from the lockers, taking the black ooze with him. He flipped over a bench and landed in the center of locker room. Nate flailed around in a puddle of the black ooze as it slowly worked into his body. He felt everyone of his muscles start to grow and swell. Nate watched in horror as his body was transformed by this ooze.
He felt the ooze work it's way throughout his body as it convulsed and spasmed. He seemed to calm as the ooze made it's way to his brain. He stopped moving as the last of the black ooze was absorbed into his body. Nate slowly stood up and walked over to one of the mirrors on the wall. He had large, bulging biceps, large pecs and an impressive six pack abs. He was the most muscular person he had ever seen. There was no sight of his extra weight.
"Hello, I feel I should introduce myself," said a voice that only Nate could hear.
"Who said that?" asked Nate, looking around.
"Me. I did."
"Who are you?" asked Nate.
"I'm the being that was just absorbed into your body," replied the voice.
"I...I don't understand. Did you do this to me?" asked Nate.
"Yes, do you like it?" asked the voice.
Nate checked himself out on the mirror again. "Yeah, I do, actually. Thank you."
"You're welcome. I like to make sure my hosts are at peak physical strength. There are perks to having a being like me being part of you," replied the voice.
"So, you're now part of me, some sort of symbiote, is that correct?" asked Nate.
"That it is the word, yes. My beings are unable to survive for long outside of another's body. We require the use of another, working in symbiosis with the other being, or if needed, taking it over completely. However, I have found your species is more advanced and will reject a symbiotic being if it tries to take over completely," said the voice. "At least, I think that is why."
"So, if you made these changes to me, what other changes could you make?" asked Nate.
"Just about anything," replied the Voice. "I could make additional alterations to protect your body and match your physical strength, should the situation require it. Why do you ask?"
"Oh, just wondering," replied Nate.