The Sonic Underground once stayed in Lake Valley, where they were welcomed by Stripes. While the group enjoyed their stay there, Stripes secretly planned to hand Sonic and Manic over to Dr. Robotnik in order for the doctor to allow Lake Valley to remain as peaceful as it normally is. However, Stripes ended up getting a crush on Sonia. After Robotnik's betrayal and attempt at destroying the valley, the Sonic Underground fought him off, and convinced Stripes and the other inhabitants of the valley to fight back. After this, the Sonic Underground left the valley.