Also known as: Yamantaka Vidya-raja, Conqueror of Death, Vajrabhairava, Rokusokuson (六足尊)—"Venerable Six-Footed One".

One of the Five Great Kings of Wisdom, whose direction is the west. He is the wrathful manifestation of Amida Nyorai and is represented with six faces, six arms, and six legs. He rides a sacred cow or buffalo and is worshipped as a god of victory. He fights pain, poisons, snakes, and dragons.

Sometimes represented with the makouin/bakouin, or "horse-mouth mudra" (馬口印).

His wisdom is the pratyaveksana-jnana (妙観察智), or "wisdom of wondrous observation".