Who is Sonic the hedgehog? I have no idea who he is! someone help cause theres sonic fandoms EVERYWHERE!

A blue sega hedgehog that I don't understand why people like him so much

A blue hedgehog that is really fast...
I am NOT in the fandom. But, I noticed Mirajane from Fairy Tail on the cover. X3

SHORT OF THE LONG!!! he is a blue hedge hog .-.

He is a blue hedgehog that's in second next to Mario and runs fast at 3000 speed also his some of them:sonic X sonic boom

Well hes this really cool hedgehog who can go super duper fast and I prefer the one from the live action film (the 100% cartoon kind not the one with human face). He can go 300 mph last time i checked. Please do not develop love because I GOT IM FIRST