The name comes from Saiyajin, the Japanese term for the Saiyan race in Akira Toriyama's Dragon Ball series, with 'Sayajin' a common alternate spelling in fan uploads. Super Saiyan 3 is the spiked-hair, eyebrow-less form Goku first reveals against Majin Buu in Dragon Ball Z, famous for its long screaming charge-up. Short mixes isolating that epic, escalating energy later spread through anime edit communities and soundboards, where this 11-second version is kept as a quick shorthand for an overpowered transformation without using the full scene or score.