Missile

Missile (ミサイル, Misairu) is ' side special move in Super Smash Flash 2. Samus releases two different type of missiles out of her Arm Cannon. The first is the Homing Missile that can be maneuvered towards the nearest opponent after it is released. This deals 10% to the opponent. The second type is the Super Missile which deals 14% and is faster and more powerful, however, it goes in a straight line.

Origin
Missiles have appeared in every game in the Metroid series, starting with the original Metroid. It is a more powerful weapon than the normal uncharged beam and they are required to access certain areas (as some doors can only be opened by being bombarded with missiles) can defeat some of the tougher enemies. They are usually first acquired upon finding a Missile Tanks, or through other updates. In the Metroid games, missiles didn't have homing properties until Metroid Prime, however, Samus first had missiles with homing abilities in Super Smash Bros. Melee. Super Missiles first debuted on Super Metroid as more powerful alternatives for common missiles, but being more rare to find.