avenger best agent

you are the girl in the background and you were found by nick and he keeps you a secret not even the avengers know about you and you are super secretive and you don't even have a file on yourself so nick still doesn't know your name so he calls you agent gun because your specialty is guns and you have even been put in a machine that even made Tony tell the truth and it makes anyone secretive tell people everything but you were put in that machine 7 times all you have said was that you are good with guns and that's all they know and well they know your a girl but you have a very disturbing past you can make that past and you were born with purple hair but you don't know why and you have green eyes and you don't tan or sunburn you just stay pale and you have a rose tattoo on your shoulder and you have a forked tongue and you have a tongue piercing and you have sharp nails and they are super thick and almost impossible to cut through but they are really sharp and you may be skinny and small and you may look weak but you are stronger than Bruce in his hulk form and you have killed many people but like I said the only thing nick knows is that you are a girl and that you are good with guns * * * all the avengers are in this * * * * story: the avengers were in a huge mission and asked fury/nick to help them so he sent you out and they were so confused because you look really weak and fragile but you are stronger than all of them combined