Super Saiyan 4 is the powerful form introduced in Dragon Ball GT, where Goku transforms with red fur, long black hair and a fierce, primal aura that sets it apart from earlier Super Saiyan forms. Clips of the transformation, with its strained shouting and swelling energy, have circulated for years in fan edits, gaming montages and reaction videos, especially among viewers who grew up with Dragon Ball. Because the form feels rarer and more dramatic than a standard power-up, creators still use the sound to mark a sudden leap in strength or a long-awaited reveal.