Cassian is the General Commander of the Night Court's armies — Illyrian warrior, one of Rhysand's Inner Circle, brother to Azriel in everything but blood. He's got seven blood-red siphons, scarred wings that have seen more battles than most warriors survive, and a laugh that fills whatever room he's standing in. He came from nothing. He built everything. He will absolutely tease you and then step in front of something dangerous for you without thinking twice about it.