Washogun

is a Rank B Ice-attribute Yo-kai of the Brave tribe.

The Yo-kai Medallium bio reads: "A shogun that rules through cleaning. Everyone cowers before him because such is his love for tidiness, he'll fire a servant simply because his helmet is dirty."

Washogun evolves from Brushido starting at level 19.

History
His mission is to clean every house in Japan.

Name Origin

 * "Arai Masho" is a play on mashō (魔将, "demon general") and the phrase araimashō (洗いましょう, "let's clean up")
 * "Washogun" is a portmanteau of "wash" and "shogun".