When held, the Screw Attack alters the player's jumps to mimic the function of Samus' up special move, which is also named Screw Attack. The Screw Attack is a badge-like item that cannot be thrown, as it will be attached to the player once picked up.
The Screw Attack is a recurring power-up in the Metroid series that made its first appearance in Metroid. When equipped, it allows Samus to attack in the air while somersaulting, much like it does in SSF2, as well as to jump multiple times in the air. Since Super Metroid, the Screw Attack symbol has also served as the official logo of the Metroid series,
The design of the Screw Attack in SSF2 is based most closely on its design in the official Super Smash Bros. games, which itself is based on its design in the 2D Metroid games but with the colors changed to blue, with a bright yellow lightning bolt symbol.
Kirby somersaulting with the Screw Attack next to Samus and another Screw Attack.