Hey, cool! I am a huge Sonic fan as well. In fact, I had a Sonic model I was working on, but I put him to the side for now, since I'm too busy tweaking Solid Snake from Metal Gear Solid 2 (yep! That's my current project I'm talking about here! Couldn't be more excited about it, unless it was Naked Snake from MGS3 =P). But yeah, I left Sonic alone because of this, and also because, I've actually seen someone upload the OFFICIAL Sonic Heroes models, for Half Life 2 I believe.... Why make a model when you can grab the REAL COMPANY'S one, lmao. But actually, I would like to make Sonic anyway, because I can kind of add my own touches, like I do when I draw him.
By the way, this one has me curious as my 9 year old son is BEGGING me to do Sonic and animate.. he's a total Sonic fanatic!! ( and I mean FANATIC! )