Pietro Maximoff

Pietro Maximoff was born in Sokovia with his twin sister, Wanda. His parents passed away when he was only 10 thanks to a bomb designed by Stark Industries, which gave him a deep hatred for Tony Stark.

He ended up going to HYDRA and gaining super-speed from a scientific experiment using the Mind Stone. He later died in the movie Avengers: Age Of Ultron, after getting shot by multiple bullets and bleeding out.