Nazo Unleashed

Nazo Unleashed is a fan-made Web Animation trilogy of Sonic the Hedgehog by Flash animator Chakra-X (Newgrounds, deviantART, YouTube). It is based around an unused screenshot from Sonic X that had a mysterious hedgehog with spiked-up quills and a silver coat. The mysterious character was Fan Nicknamed "Nazo", a Japanese word for "mystery".

The premise of the trilogy is that Nazo is a sentient form taken by the negative energy of the Chaos Emeralds. Nazo is a hedgehog because the Chaos Emeralds have gotten accustomed to the forms of Sonic and Shadow. Of course, something made of negative energy like that is going to turn out evil. Nazo then goes around the world collecting the Chaos Emeralds in his plan to become more powerful, leaving much destruction in his wake. Sonic and his friends hear of this and go to take him down, but he is easily defeated. Shadow then comes in try to defeat Nazo, but is defeated too. Only when the two hedgehogs use their Super Modes together can they take him down, but it turns out Nazo has other plans...

The biggest claim to fame of this series are the masterfully animated fight scenes. Of course, it's quite obvious where they got their inspiration, but it pulls it off very well, as they carry the tension, action, and fluidity as expected of those scenes.

Tropes exhibited by the trilogy:
"Nazo: No! Stop! You can't be doing this!"
 * Animesque: The art style is much like that of Sonic X, just more on-model.
 * Approval of God: Sonic's first credited games voice actor, Ryan Drummond, praised the series.
 * Autobots Rock Out: Uses some of these themes from the Sonic series to emphasize the action. To name a few, "Open Your Heart", "Live and Learn", and "His World".
 * Ax Crazy: Nazo. He eliminated one of the cities where one of the Chaos Emeralds were stored just because he could.
 * Badass: Everyone who engages in action is highly Badass.
 * Back From the Dead:
 * Bash Brothers: Super Sonic and Super Shadow, who take down Nazo working together.
 * Beam-O-War:
 * Big Bad: Nazo
 * Big No: Sonic, when
 * Brought Down to Normal:
 * Classic Villain: Nazo, who fits the mold of a Pride villain.
 * Combined Energy Attack:
 * Fight Series
 * Fusion Dance:
 * Heroic BSOD: Sonic undergoes one after Sonic then assumes his "Dark Super Sonic" form to beat Nazo down.
 * High Speed Battle: Super Sonic and Super Shadow engage Nazo in one, in which the two finally defeat him.
 * Ki Attacks: Or Chaos energy attacks if you prefer.
 * Killed Mid-Sentence:
 * I Am Not Left-Handed:
 * Made of Evil: Nazo, who is made of the negative energy of the Chaos Emeralds.
 * Meteor Move: As part of the Dragonball Z homages, this is used a lot.
 * Omnicidal Maniac: Nazo
 * Red and Black And Evil All Over:
 * Sequel Hook:
 * Shout-Out: The fight scenes are styled very similarly to those of Dragon Ball Z. Chakra-X justifies this saying that Sonic's creators admitted to using Dragon Ball Z as inspiration for the series; Chakra-X just takes the references Up to Eleven.
 * Super Mode: Used very liberally in this series. First, there's Super Sonic and Super Shadow, then later,
 * Super-Powered Evil Side: Once Nazo induces a Heroic BSOD in Sonic, Sonic goes into his "Dark Super Sonic" form from Sonic X. Sonic then calms down and assumes his "normal" Super Mode.
 * Take That: Word of God says that the scene with Shadow pointing a gun to Nazo was one to his game.
 * Teleporters and Transporters: Shadow and Nazo use Chaos Control teleportation frequently.
 * This Cannot Be!: Nazo says something to this effect right before


 * Updated Rerelease: Chakra-X released a YouTube-exclusive update called the "Special Editions" which updated the animation with techniques that he learned later on.
 * Voice of the Legion: