Susano-o, sometimes romanized as Susanowa, is a Shinto god of the storm and seas. His many depredations on earth caused Amaterasu to seek refuge in the Ama-no-Iwato. As a result he was banished from the heavenly realm of the gods and descended to the Izumo province.
One particularly popular story tells of his confrontation with Yamato-no-Orochi, an eight headed serpent. Susano-o one day came across Ashi-nadzuchi and his wife Te-nadzuchi saying a tearful farewell to their daughter, Kushinada-hime, who was to be the next sacrifice to be devoured by Yamato-no-Orochi, an eight-headed dragon. He then turned the girl into a comb, intoxicated the serpent with vast amounts of sake, and slew him in his drunken state. Kushinda-hime was then restored to her original form and given to Susano-o to be his bride. The mystical blade Kusanagi was also retrieved from the serpent's tail.
In Basil Chamberlain's translation of the Kojiki Susano-o is quite literally translated as "His-Swift-Impetuous-Male-Augustness".