| "Siren Head" may be referring to two or more different villains. If you're uncertain which one you're looking for, just flip a coin.|
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Siren Head is a popular internet urban legend and hostile creature made by artist Trevor Henderson. As the name says, it has a siren for a head. Siren Head appeared in multiple media due to being so popular, while YouTube stars such as PewDiePie, Markplier, Jacksepticeye and many others, boosted Trevor's and Siren Head's popularity on the internet.