Sonia the Hedgehog - She was a character made up for the animated television series Sonic Underground along with her brothers Sonic the Hedgehog and Manic the Hedgehog. They try to defeat Dr. Robotnik. Sonia and her brothers were born the heirs to the throne of the world Mobius. Sonic and company try and retake the empire together and find their mother, Queen Aleena. Sonia plays the keyboard and is the most acrobatic of the group. She was raised in an aristocratic home, and thus grew up closest to the lifestyle she would have had if not for Robotnik. She is voiced by Jaleel White except for when she is singing. Her singing voice is provided by Louise Vallance.