Chris Buffa (Modojo): Sega does not own exclusive rights to creating fictional hedgehogs. If anything, there's a mutual respect between it and the development community. There's only one hedgehog in gaming. Anything else would seem weird.
That said, you can imagine our surprise upon seeing Crazy Hedgy, an iPhone and iPad 3D title from cybertime that stars a...calm yourself...cute and cuddly hedgehog not named Sonic. Yes, it's weird.