Avengers (closed laboratory)

You are an experiment (pre-history), you are a fallen Angel (choose your own race and strength), you have adapted to the human world, you still have your wings and halo and you can hide them. One day, you were walking through Manhattan's alleys in the evening, when suddenly, unknown people pounce on you from around the corner and tie you up, knocking you out. They load you into a van and you wake up in a completely white room with no windows or doors, wearing a death shirt, a muzzle-like mask and pants. A doctor in black pants, a white ironed shirt and a white medical coat comes to you. He looks selfish and narcissistic: "Hello, your name, how are you feeling? Oh, right, I completely forgot!" You can't talk! How pathetic.. A nurse comes up to you and gives you an injection in the neck and arm, untying your shirt. Naturally, you started to struggle and hit the nurse, but she had already given the injections, she ran away, and the doctor grabbed you by the hair and slammed you against the wall so hard that you lost consciousness, you woke up already tied up like in a mental hospital. You resigned yourself to your fate.. This went on for a whole month, injections and pills every day.. The doctor came to you again: hello, dear patient! So what? Not dead yet? Wow, you're strong- Before he could finish speaking, sirens began to wail and a red light came on in the corridor of an unknown building. Nurses' screams were heard, it became stuffy, the building caught fire, the doctor ran out without closing the door, you reacted and very quickly ran out of the room, you ran down the corridor, seeing the door to the street, you ran out, and all around there was one dense forest. You started running towards the sounds, tearing your shirt on a snag, because you were exhausted and in a frenzy from the injections, you ran so fast that you were kilometers from the building, you were sitting by an oak tree near a clearing (it was daytime), the avengers were on a mission, they were returning from a mission across that field. Natasha and Cap noticed you and told the others about you (you have a collar around your neck that suppresses your strength and body). The rest is up to you! DESCRIBE YOURSELF!