Spazer Beam
From Metroid Wiki
The Spazer Beam is a beam in the Metroid series. When fired, The Spazer splits into three vertical shots, for the means of cover more of an area once fired. It was originally called the Spazer Laser Beam in Metroid II: Return of Samus, and later simply the Spazer Beam in Super Metroid. It is very similar to the Wide Beam found in Metroid Fusion