Sonia the Hedgehog

Shortly after Sonic, Manic, and Sonia’s births, the Underground Zone’s local Dr. Robotnik would seize power of Mobotropolis and convert it into the polluted and metallic city of Robotropolis. A bounty was placed on the children of the queen, and thus Aleena was forced to take them into hiding. Eventually, the Oracle of Delphius appeared before her with a prophecy which foretold that she would have to separate with her children in order save they’re lives. She sent the siblings to three different caretakers, and Sonia was placed in the care of Lady Windimere, an aristocrat. As a result, she behaves in a rather spoiled manner. Sonia would learn how to play the keyboard and went off to form a band after meeting Sonic and Manic. The Oracle of Delphius reappeared to tell the children of they’re origins. Shortly afterwards, Dr. Robotnik captured Lady Windimere, as well as Sonic and Manic's guardians, and roboticized them. It was then that the three hedgehog children would form an alliance with each other to locate they’re missing mother.

Sonia and her siblings would engage Robotnik in battle many times. Evil Sonic would appear in the Underground Zone on a mission from Robo-Robotnik to recover the Giant Borg. Believing Underground Sonic also possessed a piece of the Giant Borg; he located and interrogated him and his siblings. The evil hedgehog departed only for two new Sonics to appear: Prime Sonic and Zonic. Sonia, Underground Sonic and Manic mistook Prime Sonic for Evil Sonic until the two new hedgehogs explained who they are. Zonic would remark how he had a lack of data on Underground Sonic and the Sonic Underground dimension and would request an explanation of the Zone’s history.

Sonia, Manic and Underground Sonic would then team up with Sonic Prime and Zonic to stop the threat of Giant Borg. After defeating Giant Borg, Sonia and Manic freed Evil Sonic from jail after Robotnik imprisoned him. For helping Robotnik get the components of Giant Borg in the first place, Evil Sonic was then taken into custody by Zonic, who left Sonia and her siblings to continue their fight.