Sonic the Hedgehog. One of video game's most popular franchises and characters has had many, many different versions over the years. Whether you're a nostalgic gamer, or you just started watching Sonic Boom or maybe have only seen a few episodes, one thing is for certain - The Sonic has changed quite a bit since the first animated series from the 90's. While the show still has some of the same characters, like Sonic, Tails and Knuckles, the latest version is certainly quite different than the original. Which is why Channel Frederator and Tooned Up is exploring Sonic the Hedgehog: Then VS. Now.