Chaos Spear

Chaos Spear (カオススピア), also known as the Spears of Light is one of Shadow the Hedgehog's signature moves and a variant of Chaos Control. It is a lightning arrow-head-shaped bolt that is made of Chaos Energy. The attack appears in Shadow the Hedgehog, Sonic Chronicles: The Dark Brotherhood, Sonic The Hedgehog (2006), Sonic and the Black Knight and in the multiplayer and the final battle versus him in Sonic Adventure 2.

Sonic Adventure 2
In Sonic Adventure 2 and its remake, during the final battle between Sonic and Shadow, if the opponent is Shadow, then he will launch the Chaos Spear at Sonic if Sonic is too far behind on the runway. Also, int the multiplayer "Race Mode", after Shadow gets a certain amount of rings, he can use the Chaos Spear to impede his opponent.

Shadow the Hedgehog
In Shadow the Hedgehog, the Chaos Spear can only be used in the final boss battle, Devil Doom. Super Shadow can launch multiple Chaos Spear like missiles very quickly to cause minor injuries on Devil Doom, and can charge the attack to make it more powerful.

Sonic the Hedgehog (2006)
In Sonic the Hedgehog, by pressing A, X (XBox 360), or X, Square (PS3), Shadow can shoot a Chaos Spear. The technique can be upgraded when Shadow launches the Chaos Boost to Level 2, called Chaos Lance which can cause explosive damage. Chaos Lance appears in the final battle as well.

Sonic Chronicles: The Dark Brotherhood
In Sonic Chronicles: The Dark Brotherhood, it is the same as the one in Sonic the Hedgehog (2006), as a mini-lightning bolt.

Sonic and the Black Knight
In Sonic and the Black Knight, Sir Lancelot (who is a counterpart of Shadow), with his sword Ddraig Goch, can launch mini arrows of energy that resemble a Chaos Spear by swinging the sword. Also, when fighting Sir Lancelot as a boss character, he will fire several of these arrows when he gets too far away.

Sonic Generations
In Sonic Generations, Shadow will use Chaos Spear in the Final Rush race/battle agaisnt Sonic.

Trivia

 * Chaos Spear has changed over the years. First it was a yellow lightning arrow that damages in Sonic Adventure 2, then in Shadow the Hedgehog, it was a light blue oval that damages, and in Sonic the Hedgehog (2006) it was a white/blue bolt of electricity that stuns. In Sonic Universe, it was a green lightning bolt-like spear. In Sonic Chronicles: The Dark Brotherhood, when you used Chaos Spear, they looked like purple lightning spears. Finally, in Sonic and the Black Knight, it was a small red arrow that damages.
 * In Shadow the Hedgehog, the Chaos Spear can be only launched when Shadow is in his Super Form but it can be charged for greater power.
 * In Sonic Adventure 2 and Sonic Adventure 2: Battle, Shadow announces the Chaos Spear by shouting "Disappear!"