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Globally, ワイス (Wais , Weiss , Weis ) is quite a common principally boy's, but scarcely feminine first name. The first name ワイス is characteristic of Mongolia, where it is quite a common boy's name, Afghanistan, where it is quite a rare boy's name, and Luxembourg. Not in comparison with a country's population, the name is most common in Afghanistan, Indonesia, and Bangladesh. More frequently, ワイス is the last name as well as the forename.
ワイス is also a name for the fictitious and mythical characters: Weiss Schnee , the title character of RWBY and Weiss the Immaculate .