Alter Ego: Jonathan Crane Bio: The Scarecrow constantly proves to be a dangerous threat to the Dark Knight not due to physical strength, but to the emotional and psychological damage his toxins can cause. In fact, Scarecrow tends to shy away from physical confrontations and instead lets his victims fall prey to their own waking nightmares. A doctor of the deadliest caliber, the Scarecrow's horrific acts don't stem from a villainous desire for power or money, but from an unbreakable urge to learn and hone his craft - mastery over fear itself.