Jack is a very intelligent, sometimes deceptive person when it benefits him. Though he speaks with the slang of those on the street, he actually has a very fine grasp of his language, and can show it when he sees it's needed. He has a very grim sense of humor, something he carried over from his life. He has very little tolerance for nobility, and often laughs at their sense of authority. Money isn't that big of a deal to him, though he enjoys the thrill of doing what he does. He is, and always has been, selectively empathetic and remorseful.