Super Saiyan 4 (Zekons)

Super Saiyan 4 (超サイヤ人フォー, Sūpā Saiya-jin Fō) is a fourth and final Saiyan transformation present in the Dragon Ball GT. The only way a Saiyan can attain Super Saiyan 4 is if he is already a Super Saiyan, can transform into a Golden Great Ape and regain conscious control over the form.