45%
His birthday was never mentioned in Sonic X, but according to his debut on October 16, 1992 in Sonic the Hedgehog 2, his birthday officially is October 16th.
sally does not have a boy frien d so shut u're face if u asked this.
Sonic's birthday is in june.
Sonic's birthday is generally regarded to be June 23rd as it is the release date of his first game.
Silver's birthday is currently unknown.
June 23
The first "Sonic the Hedgehog" game was "Sonic the Hedgehog" in 1991. Sonic's birthday is June 23 1991.
The US and EU birthday of Sonic is June 23, 1991. (the year he was introduced) However, his age is fixed at 15.
June 23rd.
August 2012
I know that Knuckles the echidna's birthdate is the 2nd of Feburary. buut i need the rest.