Suu-san (Japanese: スーさん Sū-san) also known as Gunshin Susanoo (Japanese: 軍神スサノオ Gunshin Susanō) is a Yo-kai of the Omamori tribe set to appear in Yo-kai Watch: Forever Friends. He is Shin's guardian spirit.
In Yo-kai Watch: Wibble Wobble, his Lightside form is a Rank C Yo-kai of the Shady tribe, while his Godside form is Rank Z Yo-kai of the Tough tribe. In Yo-kai Watch: Ukiukipedia Shadowside, his Godside form is a Rank S Yo-kai of the Brave tribe.
In his Lightside form, Suu-san has deteriorating samurai armor with a fading blue and yellow color scheme. He also has yellow eyes similar to Dimmy.
Yo-kai Watch: Forever Friends
Gunshin Susanoo translates to "God of War Susanoo"
Suu-san may be a diminutive of "Susanoo"
Suu-san and his godside form are based on the Japanese deity Susanoo-no-Mikoto, the powerful storm god of Summer. Susanoo is the brother of Amaterasu, the goddess of the Sun, and of Tsukuyomi, the god of the Moon. All three were born from Izanagi, when he washed his face clean of the pollutants of Yomi, with Susanoo being born when Izanagi cleaned his nose.
He's notably known for having a strong rivalry with his sister Amaterasu, which came to a head when he destroyed her rice fields and inadvertently turned her into a recluse as well as being the one who slew the 8-headed serpent, Yamata-no-Orochi, as part of his punishment with his feud with Amaterasu.