Killer Machine Gun (キラーマシンガン) is a technique used by Pirate Robot.
Pirate Robot performs this technique by slowly charging its gun's power as it raises the arm in preparation for the attack.
Video Game Appearances
It appears in Dragon Ball Heroes, where it originally gets its name, as Pirate Robot's special attack.
It also appears as the Super Attack of Pirate in Dragon Ball Z: Dokkan Battle. It causes huge damage to the opponent.