If the staff at Arkham were both A: Godly Competent and B: Cared at all about their patients/inmates, they would shorn off the edge on all the Batman villains, turning it into 60s era Batman
So apparently, after Arkham Knight the game, they added the character into the comics as the identity of Astrid Arkham, yet another villain bent on destroying Batman
who would you get to voice '66 batman