Final Galick Cannon
From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
The Final Galick Cannon (ファイナル ギャリック キャノン, Fainaru Gyarikku Kyanon) is a rush attack used by Vegeta. First, Vegeta clenches his fist and shouts, "The Saiyans are a true warrior race! Do not underestimate us!" as he 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 one-handed Galick Gun through the opponent's stomach, inflicting a great deal of damage.
Vegeta used this attack to defeat Zarbon on Planet Namek. When Vegeta informed Zarbon that a Saiyan's strength increased dramatically after healing from near-death, Zarbon became fearful of the scenario, although he was well aware of it prior. He had not anticipated Vegeta's strength to increase that substantially and angrily exchanged blows with the Saiyan prince. However, Vegeta gained the upper hand and attacked Zarbon with the Final Galick Cannon rush, killing Zarbon and blasting him into a watery grave in the Namekian sea.
Final Galick Cannon was named in the Budokai Tenkaichi video game series where its color is purple and is one of Vegeta (Scouter)'s Blast 2 attacks. The final part of the attack appears in Dragon Ball: Raging Blast where it is yellow and under the name Galick Burst and is Vegeta (Scouter)'s signature attack.