Soniaxknuckles storie

Sonic left Robotropolis at the age of eleven, going after Robotnik. After five years can he go back his kingdom? A story I uploaded on to FanFiction.net which became pop...

Same storyline as Sonic Underground except for one detail. They're not triplets, they're quadruplets! Dr. Robotnik has captured their youngest sister, Ambrosia, Amber...