First, Vegeta clenches his fist and shouts "The Saiyans are a true warrior race! Don't underestimate us!". He then charges at the opponent and punches them in their face. Then, he attacks the opponent with a rapid barrage of punches and kicks before punching them in their stomach. Finally, Vegeta charges purple energy in his fist and fires the energy in the form of a Galick Gun through the opponent's stomach, inflicting a great deal of damage.
Vegeta uses this attack to kill Zarbon on Namek. When Vegeta informs Zarbon that a Saiyan's strength increases dramatically after healing from near-death, Zarbon becomes fearful of the scenario, although he is well aware of it prior. He has not anticipated Vegeta's strength to increase this substantially and angrily exchanges blows with the Saiyan prince. However, Vegeta gains the upper hand and attacks Zarbon with the Final Galick Cannon rush, killing Zarbon and blasting him into a watery grave in a Namekian sea.
Video game appearances
The technique is shown in a cutscene that reenacts the manga/anime in Dragon Ball Z: Budokai. It was named Final Galick Cannon in the Budokai Tenkaichi video game series and Dragon Ball Z: Tenkaichi Tag Team, where its color is purple and is one of Vegeta (Scouter)'s Blast 2 attacks. Named Galick Burst and with a yellow color, the final part of the rush is Vegeta (Scouter)'s signature attack in Dragon Ball: Raging Blast. Vegeta's younger brother, Tarble also uses the Galick Burst (making it his only "Galick" themed attack) as his signature attack in Dragon Ball: Raging Blast 2, but his is blue in color.