Screw Attack (move)

Screw Attack is a recurring attack in the Super Smash Flash series used by Samus.

Overview
The move consists of Samus somersaulting into the air, surrounding herself in a yellowish electrical field; inflicting cumulative damage on any opponents that touch her.

In the original Super Smash Flash, Screw Attack is 's jump attack. The move is very similar to 's jump attack in that the hitbox covers her whole body. It deals 4% damage per frame to any opponents that make contact with her during her jumping animation.

In the reboot, Super Smash Flash 2, Screw Attack has turned into 's up special move. Samus gains additional altitude as she spins, and if used on ground, Samus will leap up at a fixed altitude. The move deals electric damage on contact with opponents, dragging along and dealing up to 10% damage to them during the leap. The move also deals relatively low knockback, making it easy to keep opponents in place as damage racks up on them.

Origin
The Screw Attack in an upgrade that Samus collects in nearly every game in the Metroid series, starting with the original Metroid. It is usually one of the last special abilities Samus can learn. It constantly damages enemies during any spinning jump, dealing such massive damage it kills/destroys almost everything in its path on contact, as well as protecting her from all but the strongest attacks. It also continues to be active while she falls in the spinning motion.