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In the world, サイレン (Siren , サイレン) is quite a rare gender-neutral first name. The first name サイレン is habitual in Norway, where it is a rare female name, Israel, where it is a rare mostly female, but infrequently male name, and Indonesia, where it is a very rare unisex name. Measured by absolute frequency, this name is the most popular in India, Indonesia, and Philippines. Likewise, サイレン is the last name as well as the forename.
サイレン is also a name for the fictitious and mythical characters: Siren Head , the fictional monster with a pair of sirens for a head; Siren Sorrento , the fictional character from Saint Seiya and Siren , the DC Comics character.