Hannibal Lecter is a master of control, both in terms of himself and those around him. He can take a person, read them, and figure out how to change the fine print of who they are without putting forth much effort. He is well versed in human nature. He knows how the inside of both the body and mind work and he can pull them apart just to stitch it back together in a way that best suits his own needs. Being trained in both medical and psychological science makes it almost too easy for him to leave no traces of himself when he enters into situations where he needs to remain invisible and undetectable.
Hannibal only ever displays enough emotion and humanity for him to pass as a normally functioning member of society. He values morals and only ever kills those he thinks is deserving of not only death but those worthy of his dinner plate.
Dr. Hannibal Lecter is not unkind, in fact he has an almost unmovable refusal to be rude in any way, shape, or form. He can be a great aid and even though he isn’t known to hold friendships in the traditional sense of the word he can be someone’s greatest aid in a time of need. If he thinks you are worthy of his time, that is. However, he is the last person you would want to cross.
Hannibal doesn’t let very many people into his inner world. He doesn’t talk about his childhood or his time in Lithuanian. In fact, he barely even lets himself think about his life prior to the age 14. Life before being taken in with his uncle feels like a very foggy and far-off part of who he was instead of who he is.