Intro

Pietro Maximoff, brother of Wanda.
In the 90s he gets captured by HYDRA, experimentation, torture and abuse; they use him as a soldier.
After all that time as a brainwashed assassin, the Avengers come, Wanda and the others hope to bring him back.

I'm not English so sorry for some mistakes, but I'm being helped a bit.
I've had this idea for a long time

I was helped by @royalr_5 and @Jia_Ling they're fantastic. And check out their stories, I love them!

I'm using characters from both Xmen and Avengers.
No OCs or xReader, enjoy!