"her heart has an argument with her head every time it wants to beat."

full birth name: Sienna Isabelle Firman
age: 24 (during the unknown enemy)
birth date: February 18, 1990
aliases: The Unseen Avenger, Phantom, Deathshade, the 'anomaly', Si, CeCe, Serenity Freeman, Aunt Enna, a whole bunch more
species: genetically enhanced human (as of the unknown enemy)
universe: The Marvel Cinematic Universe
faceclaim: Shay Mitchell

book: The Unseen Avenger Series