Sonic Man

Sonic Man is a citizen of Soleanna from Sonic the Hedgehog (2006). He is a very strange person, who dresses up like Sonic by wearing a spiky blue helmet, white gloves with ring cuffs, and a T-shirt that sports the title screen emblem from Sonic 1. Not only does Sonic Man dress up like Sonic, he also claims to be the spiky blue hedgehog, boasting that he's a superhero and saying things like, "I saved Princess Elise and I fight bad guys."

In the game, when Sonic tries to tell Sonic Man that he's the real Sonic, the delusional Sonic Man challenges him to a race so that the hedgehog can prove that he's the actual Sonic. The challenge is Sonic's 14th Town Mission, and is held in the downtown district of Soleanna, New City. In the race, Sonic makes very short work of Sonic Man, who even copies Sonic's stance by putting his hands behind his back. After Sonic annihilates Sonic Man in the race, he is shocked to have found out that he's met the real Sonic, and starts asking Sonic for things like, "Can I have your autograph?" or "Can I be your apprentice?"

Sonic Man even challenges Silver to a race, which is held in Soleanna's Castle Town, and is Silver's 15th Town Mission. Even though Silver is a lot slower than Sonic, he is still very capable of beating Sonic Man to the finish line, mostly through the use of his psychokinesis by levitating and using his Homing Attack-like teleportation technique. When Silver wins the race, Sonic Man replies by saying that he was "just warming up," then leaves after supposedely hearing someone in need of help.

Trivia
If you pre-order the upcoming game, Sonic Colors at Gamestop the buyer gets a free hat similar to the one Sonic Man has.