Park Hae Jin has gone crazy for his new role. He's playing a character who is both a genius and criminally insane in his new drama "Bad Boys."

His agency described his character Lee Jung Moon as an "emotionally complicated character" but that may be something of an understatement. Lee Jung Moon is very smart, with an IQ of 160, and he's put his brains to good use earning doctorates in philosophy and mathematics. He's youngest member of Mensa, a high IQ society. But he has also unfortunately used his intelligence to commit horrible crimes, as he is a serial killer.

It's the baddest role Park Hae Jin has played.

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