User blog comment:Nelmamoohead/NEW ARKHAM GAME- Batman: Arkham Knight/@comment-99.120.149.4-20140306030029/@comment-24292743-20140306211342

Rocksteady said they are creating a new character just for the series, and they said the title arkham knight was a hint to the main villain.(I might be wrong, maybe the main villain is scarcrow)