Swirlious Omai

Shirokoma is a secret boss yo-kai in Yo-kai Watch Busters. You can challenge him in White Dog Corps by going to the YBK hall and put stickers (you get from playing with someone with the same version or street passing) on him. You can only put 100 stickers a day, however.

Trivia

 * Shirokoma resembles a komainu, a statue that is said to guard shrines by warding off bad spirits. They always come in pairs.