How old is Sonic?

Hey i'm new on the Sonic Wikia and I don't know…

The origins of Sonic the Hedgehog - Polygon

Games Inbox: What do you think of the Sonic The Hedgehog movie design?

Old 'Sonic' vs. New 'Sonic'? How Do We Feel About the New Look?

How old do you see the Sonic cast as? : r/SonicTheHedgehog

What Changed? Old Vs. New “Sonic the Hedgehog” Movie Designs

How Old Is Sonic and Other Characters?

Sonic the Hedgehog movie to be redesigned after criticism of trailer, Movies

How old is Sonic? - Quora

Sonic the Hedgehog will be changed before the movie is released - Polygon

Sonic the Hedgehog' Movie Features Redesigned Sonic — Here's What He Used to Look Like

Sonic the Hedgehog is 30 years old today

Sonic the Hedgehog owner Sega may bring Yakuza, Persona to big screen

Sonic X AU - Sonic Age Progression by HedgeCatDragonix on DeviantArt