Special Guest Stars Vincent Kartheiser as Jonathan Crane / Scarecrow Guest Stars Karen Robinson as Margarita Vee McKinley Freeman as Justin Colt Paulino Nunes as B.O.P. Official Co Starring Viktor Sawchuk as Young Dick Grayson Kris Siddiqi as Dr. Artie Kind Tig Fong as Orderly Tyler Williams as Arkham Corrections Officer #1 Christopher Bautista as Sharpshooter