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Globally, Sisu (Sisu , سيسو ) is quite a common gender-neutral first name. The first name Sisu is characteristic of Syria, where it is a rare female name, Romania, where it is a rare unisex name, and Saudi Arabia. Not in comparison with a country's population, it most frequently occurs in India, Egypt, and Algeria. Likewise, Sisu is the last name as well as the forename.
Sisu is also a name for the fictitious and mythical characters: Sisu , the fictional character from Raya and the Last Dragon.