Goku first used it as a Super Saiyan 3 against Hirudegarn. He later used it on Super 17, Eis Shenron, and Omega Shenron. However, it only directly killed Hirudegarn and Eis Shenron, although it allowed Goku to win against Super 17 by firing a Kamehameha to vaporize the evil Android afterwards. Goku's usage of the Dragon Fist in the Super 17 Saga of Dragon Ball GT show that the move's origins might hails from the first Dragon Ball anime and might be an updated version of the Penetrate! technique Goku used to kill King Piccolo. The execution of the move is virtually identical to the Penetrate! move, minus the initial Kamehameha and, instead of a golden dragon, a silhouette of a Great Ape appears as Goku's inner powers.
Dragon Fist in GT The Super Dragon Fist reappears when Goku kills Eis Shenron as a Super Saiyan 4. Goku punches through the Dragon, immobilizing him, and falling before Goku's feet. Then, Goku punches Eis in his back, erupting in a brutal explosion with the Super Dragon. This method of the attack is Goku's Ultimate Blast in his Super Saiyan 4 form in Dragon Ball Z: Budokai Tenkaichi 3. In this version, Super Saiyan 4 Goku strikes a fighting pose before dashing instantly at his foe and kicking him into the air. Then, he proceeds to deliver a brutal punch to the gut, which makes the target drop to the ground. Finally, Goku charges the Dragon Fist and strikes the foe's back with it summoning the huge dragon with an aura of flames around it. After the dragon circles the skies it then comes crashing down at the enemy, inflicting massive damage.