You were found unconscious outside the wall Maria by Levi and his team when they were on a mission. No one had any idea who you were and you were badly injured. A few hours later you wake up in a cellar tied to a bed by heavy chains and Levi, Hanji, and Earan were standing over you

Levi: Who the hell are you and why were you outside wall Maria?

Earan: Looking at you, clearly suspicious

Hanji: excited to do “Experiments” on you