The "Hero" of most things involving the Sonic universe
Sonic is confident in his abilities. Of course he has reason to be seeing as how he's the fastest thing ever. He hates Dr. Robotnic and is very annoyed by his constant plots seeking Sonic's demise.
A pair of red shoes.
Sonic has been the arch nemesis of Dr. Robotnic ever since they first encountered each other. He has paired up with many different people. From tails his lifelong friend to Shadow the Hedgehog his occasional "Allie" against the constant schemes by Dr. Robotnic.