The Hulk first appeared in Marvel Comics in 1962, created by Stan Lee and Jack Kirby as scientist Bruce Banner, who transforms into a giant green powerhouse when angered. The character later became a fixture of Marvel films, animated series and video games, where his roar became shorthand for raw, uncontrolled power. Online, the isolated roar spread through meme edits, reaction videos and gaming montages, where creators use it without needing any dialogue. Its staying power comes from that instant recognition: one sound tells viewers anger, strength and chaos have arrived.