From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Giant Slugg used this attack in his battle against Son Goku in Dragon Ball Z: Lord Slug. When Goku was looking for Giant Slugg, the Namekian suddenly stuck his head out of a building. Goku attempted to fire his Kamehameha, but Giant Slugg fired the Darkness Blaster before he could. The whole city was destroyed, but Goku survived.