Y/n is Meghan Castellano's older brother. He had a normal childhood with her, playing around and such. When she started military service, Y/n decided to join the FBI, working in Black Operations to stretch out his knowledge and athleticism. He's quiet, protective of Meghan, and hates working solo. After returning to his apartment, he got an invitation to join Rainbow. Then it goes on from there.

(Y/N) Stark is the adopted son of Tony Stark. Becoming an Avenger was the biggest responsibility he has ever had. Not adding being a guardian of the galaxy as well as fjnding out his actual father is the mad titan. Follow your journey with the Avengers, Guardians and your best friends Clint and Peter. Find love on the way as you kick some alien ass.