Marvel: I'm a Symbiote

[Natasha Romanoff…] Natasha heard a voice in her head as she was in the bathroom of a safehouse, nursing her wounds.

"Who's there!?" She instantly took a defensive posture and held the only thing that was near her and could be used as a weapon, scissors.

[Don't worry. I mean you no harm… I just wanted to introduce myself to you.] He calmed her down with her words and also biologically by altering a hormone a little.

"What are you?" She asked out into the air.

[I am an alien life form. Our species survives on a symbiotic basis. We join with our host and augment them as they provide us sustenance.]

"A-Are you… inside me?" She suppressed the fear that she was feeling and put on a stoic persona.

[You can talk to me telepathically. Just think of some words while trying to convey them to me.] He informed her.

[Are you inside me?] She sounded much more vulnerable to Alex when she talked telepathically.

[Yes. I bonded with you when you were fighting that person. I was in an injured state and needed to bond with someone to save my life.] He told her a random sob story.

[And you are now living inside me? Are you some sort of bug?] She felt disgusted as she thought of that.

[I'm not a bug, please. That's offensive. I'm a slime-based species. We have no fixed form and can turn it into whatever we want. I've been living in this world for a while, miss Avenger. You can call me Alex.]

[Your name sounds human to me.] She had sarcasm dripping from her tone.

[Yes, after living here for so long, I've decided to call myself Alex. I even have a face that I created based on what I thought I would have according to human standards. See…] Alex decided to show her his face.

Natasha saw a slime-like solid come out from her neck which then came to face her.

"That's creepy on so many levels…" She commented as she looked at the floating face in front of her.

Alex had black hair and a sharp face with a well-defined jawline.

In her curiosity, Nat couldn't help but bring her hand up to the face that was floating in front of her and run her fingers over his cheek.

That was when she realized something.

"Are you the reason that my shock bracer got fried?" She'd remembered that her reliable shock bracers had malfunctioned at the time when Alex told her he bonded with her.

"Yeah… I had to, I could tell that the guy was too strong to get incapacitated by a normal shock, so I had to amplify the attack. I used the bracelet as the medium for the amplification, which was why it got fried." Alex patiently explained to her before retracting back into her.

"So, you saved me?" She asked with slight disbelief laced in her tone.

[Well, I need you to be alive if I want to survive. Changing hosts is neither easy nor pleasant for our race.]

[But it's possible…] She caught on to his words.

[It is possible. But even that depends on the level of the bond that is present. For example, our current bond is completely superficial and I can detach from you with some effort and only a minor period of weakness. But as we go forward and our bond increases and strengthens, it'll become more and more difficult to separate from you. When the bond is at its strongest, our lives will be intertwined, you live, I live. You die, I die.]

He easily mixed some lies in with truths to her to sell the bond to her.

[Is that so?] She had a thoughtful expression on her face.

[Can you tell me your powers?] She asked him.

[Sure. They're pretty basic actually. I can enhance your physique to utter superhuman levels. Yes, you'll be able to beat Captain America in a one-to-one duel by completely overpowering him. I can't get you to levels close to The Hulk and Thor yet though. They are wholly different entities.]

[But you can…] She caught on to what he was suggesting.

[With enough time and a good enough host, we can both reach unprecedented levels. My presence has completely removed any limiter that you may have on your physical status. As long as you train, you get stronger. It's easy. Oh, and also, the physique enhancement will include enhancing your reflexes. You'll be able to react to things much sooner.]

[Amazing… And that electricity?] She remembered that he was able to channel energy.

[I have the ability to manipulate lightning. I haven't had the chance to train it yet so it's still in its early stages and is pretty weak.]

[If that's what you call weak then what's strong?] Natasha thought about the shock that seemed to travel through her entire body when he channeled the lightning.

[And it didn't do much to affect that Rumlow guy.] He told her.

[How much would the physical enhancements be in your opinion?] She asked.

[About three times your base stats for now. As I grow, that multiplier would increase slowly. Let's say you can press 1000 pounds for now. With me, you can hit 3000, easily.]

Alex glanced at her status as he told her.

{ «Status- Host #3»

«Name: Natasha Romanoff (Black Widow)»

«Bonding Rate: 0%»

«Powers: Peak Human Physique (1/2 Ton or 500 kg)— Melee Mastery— Espionage Mastery»

}

'Hell, I could punch harder than her if I was separated from her…' Alex's base strength without using a host was the equivalent of 15 Tons. But that was after devouring a Spider-Man and forming a deep bond with another.

The stronger people Alex bonds with, the greater enhancements he'll get to his own base stats.

The main reason that he went for Natasha was because of her combat mastery. She was one of the most prominent and experienced fighters in the MCU without concerning enhanced people like The Hulk and Steve.

The only reason she fell short was that she didn't have much physical strength to augment her skills.

'I'm going to get her to teach me everything about fighting and training…' Alex also wanted to become a strong melee combatant while being able to train other superheroes that he bonds with. He knew that some of the people that he would bond with would mostly be like Gwen-65 aka Ghost-Spider. They would have no actual training and in the scenarios where they run into a foe that's evenly matched they would get completely decimated.

[I'm not that strong.] She chuckled when she heard him say that she can press 1000 pounds.

[Don't sell yourself short. It's a thousand pounds, I can tell. Though it's your peak performance. You can only lift that much momentarily, your constant press weight should be around half of that.] He had a pretty good idea about her biology.

[…You're right. Damn.] She was impressed.

[Other things include enhanced regeneration, increased lifespan, and eventually, your body will become the perfect human existence.]

[Increased lifespan?]

[It's an abstract thing. I can enhance your metabolism and make sure that your cells are able to keep splitting for far longer than possible. I don't know the limits of the ability for now.]

[Damn…]

[So. I'll deepen the bond now… If you don't have any issues.] Alex told her and only gave her a few seconds to think

[Wait…]

[It's now or never Nat…]

[But…]

[Don't hesitate. Just do. Think of all the good that you can do… You can truly protect your loved ones…] He was basically enticing her like the devil.

[…Okay.] Nat had already been pretty convinced and she agreed after a moment of hesitation.

That was the signal for Alex to work his magic.

Black tendrils burst out of Natasha's body and ripped apart her leather combat suit, leaving her completely naked.

Before she could say anything about the bizarre scene in front of her, a tendril came to her face and covered every inch of visible skin. Going from her mouth to her nose, ears, and eyes. He suppressed all her senses as a mask formed over her face.

Next, the tendrils started coalescing into four large ones that were protruding from her wrists and legs. They then got fixed to the ground and started extending, suspending Natasha in the air by her four limbs.

[Alex…] Her voice was low to convey her discomfort. She still wasn't panicking but it wasn't exactly comfortable to have all your senses blocked, be unable to breathe, and be suspended in the air in a spreadeagle position.

[It's all fine. It'll only be a minute.] He told her as the tendrils started wrapping around her body and forming a secondary black-colored skin over her body which clung tightly to her curves. It especially made her perfect tits and ass look like they were just made to be fondled and played with.

The next instant, Natasha felt a prick in her neck. It didn't even make her flinch since she had an unholy amount of pain tolerance.

Alex formed a deeper bond with her as he enhanced her hormone production and metabolism while enhancing her sensitivity.

***

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