Directory: Techniques → Offensive Techniques → Energy Wave
Big Masher is a Full Power Energy Wave used by Lord Slug in both his Giant and Ghost forms.
In Dragon Ball Z: Lord Slug, Giant Slug attempted to use the attack to stop Gohan from whistling only to accidentally hit his own ship.
In Dragon Ball Z: Plan to Eradicate the Saiyans, Ghost Slug uses the technique in a beam struggle against Piccolo's Special Beam Cannon.
Giant Slug fires the Big Masher
Giant Slug's Big Masher hits his ship