'Sonic the Hedgehog' debuted on June 23, 1991.<br />In honor of the speedster's birthday, here are four facts and one conspiracy about the iconic character.<br />1. , Sonic was first designed to be a rabbit, but later turned into a hedgehog.<br />2. , His first name was Mr. Needlemouse.<br />3. , Sonic originally had a human girlfriend named Madonna, but SEGA of America axed the idea because they didn't think it would be appropriate for the U.S. market.<br />4. , 'Sonic' games had different box artwork in Japan.<br />5. , Michael Jackson allegedly helped create the 'Sonic' soundtrack.<br />According to 'The Huffington Post,' Jackson, who was reportedly a huge SEGA fan wrote music for the 'Sonic 3' soundtrack, even though he wasn't credited in the game and it was never officially confirmed.<br />However, this would have been in 1993 amid Jackson's sexual abuse allegations, so it would have been understandable if they kept his involvement quiet.<br />Some fans think the end credits sounds similar to "Stranger in Moscow," among other examples.