Board Thread:General Discussion/@comment-24270839-20131212055952/@comment-477304-20131219141513

Am I Mr. Grumpy?

Anyway, Sonic did have a birthday party, but his official aged has not been revealed as of the events of Generations and the only official source for Sonic's age, Sonic Channel, still lists his age as 15, so the assumption is that he's still 15.