In the Video Games and Cartoons, he was simply born with both, but in the British comics he was granted both in a scientific experiment involving a chaos emerald. This same experiment is what created sonics enemy, Dr. Ivo "Eggman" Robotnik.
From a design standpoint, Sonic was made blue to match the American flag(when combine with his trademark red and white sneakers) and was made fast to better sell segas system, which could supposedly process information faster than other systems at the time.
Sonic speed which is known as Mach 1 is the speed of sound which is 761 mph.
You can turn into super sonic in sonic colors,but you do have color powers from the wisps.DS:BoostBurstVoidLazerDrilland RocketWii:RocketBurstDrillFrenzyHoverCubeLazerand Spike
The light speed dash in not in sonic colors
He looks like color blue with red eyes he can fly and Sonic always fights with him to tell you so he doesn't have speed shoes cause HE CAN GO FAST AS HE CAN!
I heard from the sonic comic websites that he broke something on a treadmill by going super fast and he turned blue for the color of speed.(His dad is brown and his mom is light purple <---this might be the answer.)
i think he could do light speed attack on sonic 2 battle
that would be a hard one sonic runs at full speed 749mph but superman at full speed flys 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000mph but in sonic and the rings sonic runs 10000000000000000000000000000000000000000000000000000000mph so superman is faster but if sonic went sonic unleashd and did a sonic bost he could run faster then the speed of light and he never ends in speed sonic would just get as fast as he wanted to so all together sonic the hedgehog is faster then superman and anything else go!!!!!!!!!!!!!!!!!!!!!!!!!! sonic the hedgehog i think sonic because sonic is even faster than cheetahs:D
Sonic speed shadow strength
When Sonic turn to Super Sonic he turns Gold not Yellow.
You can't do it
Sonic travels at the speed of sound which is 343km/s saying that's fast is an understatement.
Sonic Colors