Well no-one really knows coz he doesn't have a you know what...
Although when Sonic was born his parents must of known that he was a he!
But all the male characters don't wear clothes but the female characters do! Apart from Sally Acorn who only wears boots and a cardigan Well of course hes a boy hes a CHARACTER can you imagine: sonic the girl Hedgehog
a boy.
A boy (Sonic's first game is not really Sonic the hedgehog it is a racing game & Sonic is an air freshiner and it was made a few months ago before Sonic the Hedgehog was made in 1991)
He is a boy
Sonic the Hedgehog is a male.
sonic the hedgehog
besides sonic, knuckles or jet
Silver the Hedgehog is a boy.
Yuji Naka and he is a boy
No instead there are three Sonic titles under the name of Sonic Advance, Sonic Advance 2, and Sonic Advance 3.
No Shade is female.
Yes.
No it is for game boy