From my viewing experience, villains are two dimensional and just meddlesome. They don’t serve any purpose other than being annoying at what they do and thwarting the hero in any annoying way possible. Min Joon-gook (“I Hear Your Voice”, SBS / 2013), however, is a name that strikes fear into the hearts of many — and he’s actually menacing enough to be a proper villain. When he says he’s not going to rest until he kills you for putting him behind bars, he will do just that. Relentlessly! His vengeance is both emotional and violent and it’s legitimately terrifying to watch.
(Shortest post ever, or shortest post ever?)
Honorable Mention: Oda Taisei (“Double Face”, WOWOW x TBS / 2012)