{Note: Massively Revised 7/8/2019}
Gary Oldman, in a titanically twisted, iconic, canonical, epoch-defining performance, portrays psychopathic, corrupt DEA agent Norman Stansfield in the film LΓ©on, The Professional. Stansfield really gets down to some serious malevolent weirdness in the above video scene with would-be DEA agent-slayer Mathilda (Natalie Portman). He calmly interrogates the young lady in ways that would bamboozle, unnerve, and intimidate anyone in human history. Throughout, the crazed but {mostly} composed DEA agent manages to be one moment menacing, the next pleasantly conversational. Stansfield presents an enigmatic, occasionally humorous, malevolent-ly inclined figure. Quite unforgettable.
In The Fifth Element, Lost in Space, and True Romance, he displays the ability to simply do anything he wants as an actor. All 3 roles are quasi-humorous/sinister, but in entirely different ways. Masterful.
Bideodromage 