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.

Overview
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.

Origin
Shurikens are one of the more basic weapons seen in the  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

 * After the move got replaced by Shadow Clone Toss in v0.8a of the demo, it became part of his back throw.
 * Despite shuriken weapons' black color in the anime Naruto, the shuriken used in SSF2 was white and blue until v0.9.0.2007, when Naruto got recolored.