|This group exists primarily or exclusively within the Sonic Underground continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
The Mountain Folk and the Valley Folk were once peaceful neighbors, and were each given halves of a medallion by Queen Aleena Hedgehog. However, the Mountain Folk's half disappeared following a celebration, and they accused the Valley Folk of stealing it. A bitter feud resulted, and the two refused from that point on to work together. This would later hinder their efforts to battle Dr. Robotnik, who set his sights on building a dam in their home territory. As such, the Hedgehog Queen sent word to her children Sonic, Sonia, and Manic to approach the two groups and help reconcile them.
The Hedgehogs were aided in their efforts by Jerod and Serro, members of the Valley and Mountain Folk who had fallen in love despite the feud between their elders Granny and Zeb. Unfortunately, when their relationship became known, Granny became even more adamant that they wouldn't work with the Valley Folk, something that Zeb agreed with. However, the two sides were eventually convinced to work together, and managed to destroy Robotnik's dam and the Guardian Bot defending it after defeating Sleet and Dingo. During the resulting celebration, Granny found the long-lost medallion half of the Mountain Folk, which she had put away while dancing with Zeb at their long ago party and forgotten. Reconciled, the two groups gave their medallion halves to the Hedgehog trio, who discovered a map inscribed on them.