Greg Walker shared some thoughts on two major additions to the cast via EW.:
On Why Vincent Kartheiser s Dr. Jonathan Crane aka Scarecrow Makes for the Perfect Season 3 Threat: Think Hannibal Lecter. He s been given the opportunity to opine on ways to stop villains, and a villain breaks out in Gotham and it draws [Dick Grayson] to work with him, Walker explained. So much of our show is about becoming a family and the fears that people have as they grow older and get older. Crane seems to be, in many ways, a perfect villain in that he exploits fear. The human mind and heart become the battlefield. This is someone who s working off your feelings, and your emotions, and that s where we want to live. This is a learned psychologist who understands the human mind but also has a deep, dark vendetta to destroy people in a way that you need to be able to manifest as an actor – to find the broken and the mania. And [Kartheiser] handles both very well.