Tenzen Yakushiji from Basilisk. Seriously, he is a guy who manages to be the most evil of a series which is basically Evil Versus Evil, a Complete Monster of a ninja who plays both sides of the conflict between his Iga clan and the Kouga clan for his own sadistic benefit and ignoring the code and pride of his clan, which even the most disgusting rapist, Nenki, followed by enlisting the aid of one of the Shogun's concubines, and whose most heinous moments, especially in regards to Kagerou Kouga and Princess Oboro including driving the former to a mental breakdown and attempting to rape the latter twice, make him very much hated. He finally gets his comeuppance when Oboro finally regains her sight and uses her nullifying powers to make Tenzen's Head Asplode.
