Super Saiyan first appeared in Dragon Ball Z when Goku transformed during his battle with Frieza on Namek, a moment that became one of anime's most famous power-ups. The golden hair, glowing aura and surge of energy have since become shorthand for sudden strength across anime, gaming and internet culture. Fans reuse the transformation sound in edits, reaction videos and memes because it instantly signals that a character, player or creator has reached a new level.