sonic is so fast because hedgehogs can run SO fast that there heart beats 120 times in 5 seconds thats why he is so fast.
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Olgilvie Maurice Hedgehog, but he hates that name so he nicked named himself "Sonic" the Hedgehog because its cool, and he is fast!
Amy Rose likes Sonic the Hedgehog! Cause he's fast and saved her millions of times!
The anagram of sonic the hedgehog "sonic the hedgehog."
Sonic travels at the speed of sound which is 343km/s saying that's fast is an understatement.
Adventures of Sonic the Hedgehog Sonic The Hedgehog(SatAM) Sonic Underground Sonic the Hedgehog The Movie Sonic X