Hey, do you know about sonic? The hedgehog, how well do you really know him Here's a few facts.His legal middle name is the he has a brother and a sister that are both hedgehogs. His brother is a grain hedgehog named manic and his sister is a pink. Hedgehog named Sonia. They come from the show sonic underground Another fun fact, sonic.In blaze the cat are the same character.Just from different universes