Screw Attack

Screw Attack in an important item in the Metroid series. They are also used as weak items in the game, Super Smash Bros. Melee. If a player were to press A near a Screw Attack, they would pick it up. If the player were to jump with one in their hand, the jump would be very similar to Samus's third jump, which is also named Screw Attack. Also, if there was another player around the player who jumped with a Screw Attack, that player would take minor damage. These items can also be thrown into another player for minor damage, though the jumps are often led to combos. Also, when thrown, anyone it hits will automatically perform a Screw Attack. Although this hurts them, if they are close to other players when hit, they will hurt them as well. The item will return in Super Smash Bros. Brawl. However, now, when it is picked up, it attaches itself to the player, much like the Franklin Badge. This allows a player to use the Screw Attack's powers, while using another item, but does not allow them to throw it at others.

Trophy Information from Super Smash Bros. Melee
''One of Samus Aran's power-ups from the original Metroid, the Screw Attack turns a jump into a rotating attack move. When carrying this item, any character's ordinary jump move will turn into a Screw Attack. By the same token, if you throw this item at an enemy, your foe will spontaneously do a Screw Attack.''

Trophy Information from Super Smash Bros. Brawl
''A badge you can wear to turn your jumps into Samus's signature Screw Attacks. In Super Smash Bros. Melee, it was an item you carried, but this time around it's a badge you wear--which means you can use it and another item at the same time. There's a good chance you'll be able to string together Screw Attacks and midair strikes for powerful combos.''