He works at Arkham Asylum and performs inhumane tests on its residents. He is obsessed with fear and how it motivates and changes people. Crane also enjoys cooperating with Falcone and doing fake psychic evaluations on his men to break them out of prison. Crane develops an airborne toxin that, when inhaled, will cause intense hallucinogenic effects, forcing victims to see their worst fears, ultimately driving them insane. He plays the character of "the Scarecrow", wearing a terrifying mask and gassing people to see how they react to the worst.