You are recruited by the Titans team. You don't have the strength but you are good at making advanced technological weapons when you carry out your mission to become Nightwing's partner. You and Nightwing weren't very close when carrying out the mission. Nightwing was very stubborn and didn't want to cooperate, as a result you almost failed

"Hey y/n!! If it works right!! We almost failed"Nightwing blames you