The Spirit Nomads

 are a wandering band of gypsies. They are led by Damon the Foxirrel.

Damon the Foxirrel
The leader.

Hecuba the Sphinx
The healer and seer.

Fabian the Kuwagata
Carmen's brother.

Carmen the Kuwagata
Fabian's sister.

Silent Mobius: 7 Sins
The Spirit Nomads have quite a large role here. They've taken cover from the resident monsters of Silent Hill by hiding out in Balkan Church. When Sonic first meets them, some of their numbers are missing...