Sonic's parents have never been officially revealed in any of the Sonic the Hedgehog media. However, there have been several theories and speculations about who they might be.
One theory is that Sonic's parents are Jules and Bernadette Hedgehog. This theory is based on the fact that these two characters appear in the Sonic the Hedgehog comic books, and they are said to be Sonic's parents. However, it is important to note that the comic books are not considered canon, and therefore this theory is not officially confirmed.
Another theory is that Sonic's parents are the King and Queen of Mobius. This theory is based on the fact that Sonic is often referred to as the "Crown Prince of Mobius." However, this theory is also not officially confirmed, and it is possible that Sonic is only referred to as the Crown Prince because he is the next in line to the throne, and not because he is actually the son of the King and Queen.
Ultimately, the true identities of Sonic's parents remain a mystery. However, the fact that there are so many different theories about who they might be is a testament to the enduring popularity of the Sonic the Hedgehog franchise.