No. 3: Talon
Credit: DC Comics
Whether it be a Talon or the Grandmaster, Theo seems to fit this mold pretty well. A secret society which has been running things and pulling strings from behind the scenes seems to be where his character's origin resides. We have seen various owl motifs this season, like in the police station. The way his family seems to be an urban legend also seems to lend some credence to this possibility.