Sonic the Hedgehog

Sonic the Hedgehog is a blue anthropomorphic hedgehog. He is one of the main protagonists of the SSTP fanfictions. Like his name and species would imply, Sonic can move at the speed of sound (and even exceed this), and has lightning fast reflexes to match (hence his name), and can as well curl up into a ball (like a regular hedgehog), primarily to attack enemies. Well-known for his legendary cocky attitude, easy-going demeanor and somewhat short temper, yet strong sense of justice and love for freedom and adventure, Sonic uses his abilities to protect the innocent and his world (as well as many others) from the forces of evil, especially his arch-nemesis, Dr. Eggman, who seeks world domination.

Origin and History
Sonic is the main protagonist of the Sonic the Hedgehog video game franchise, created in 1991 by SEGA, and he replaced Alex Kidd as SEGA's mascot. He was created to rival Mario, another video game character created by Nintendo.

In 1992, he returned with Sonic the Hedgehog 2, which introduced Miles "Tails" Prower, who has been Sonic's sidekick ever since. Sonic became one of the most famous and well-known video game characters in existence. He was also the first video game character to be seen on a balloon at the Macy's Thanksgiving Day Parade in 1993 (the second being Pikachu from Pokemon).

History in SSTP
In Super Sonic Team Possible, when Sonic heard his arch nemesis Dr. Eggman teamed up with Kim Possible's enemies, Dr. Drakken and Shego, he tells Silver to find Kim, Ron, and Rufus and bring them to Mobius so they can help Team Sonic defeat the evil trio. And since then they've been joining forces quite often, Sonic and his friends team up with Kim, Ron, and Rufus in the sequel fanfics, Super Sonic Team Possible: Part II, Super Sonic Team Possible: Part III: Ridin', Super Sonic Team Possible Generations, A Very Super Sonic Team Possible Christmas, Super Sonic Team Possible Presents A Way Past Cool Valentine, and Super Sonic Team Possible: Next Gen and the upcoming super crossover, 739 Warriors. He will also be the main protagonist in kpFan739's upcoming Fanfiction trilogy, Iron Hedgehog, based off the Marvel Iron Man movies.