Shuriken

Shuriken was originally 's side special move in Super Smash Flash 2 prior to v0.8a of the demo, where it was replaced with Shadow Clone Toss and instead became a part of his back throw.

Overview
As a side special move, Naruto would throw a Shuriken straight forward. The Shuriken would travel a great distance before disappearing, extending to more than the entire length of. The projectile would deal 10% damage and small horizontal knockback to opponents hit, but very little vertical knockback, which could be used to lock a character at higher percentages. However, the Shuriken also had terrible priority.

As a back throw, Naruto throws a Shuriken into the opponent after throwing them onto the ground behind him, dealing 9% damage and launching with decent knockback.

Origin
Shurikens are one of the more basic weapons seen in the Naruto franchise. They are sharpened, four-pronged metal stars and useful for throwing. They can also be used for close combat, but not very efficiently. Although small, they can be used to distract, pin down enemy shinobi, or if accurate enough, can kill or incapacitate an enemy. They have an open circle in the centre, useful for grabbing with a finger, to avoid cutting oneself, or to put thread through. The circle is also beneficial to the weapon's overall aerodynamics, ensuring more accurate trajectories.

Trivia

 * Despite the basic Shuriken's black color in the anime Naruto, the weapon in SSF2 was white and blue until v0.9a of the demo.