Black Badge Division (or 'BBD') is a special US Marshals division in Purgatory. The team currently includes Dolls, Wynonna, Waverly, Doc, Nicole, Jeremy, and Rosita. They work keep the town safe from revenants and demons.
In Season 2, BBD's division in Purgatory is dissolved and the branch goes underground.
Originally is was a top-secret branch of Marshals, which was founded in the 1900's but Theodore Roosevelt. It was created so to eradicate paranormal forces that were blossoming on North American soil. Edwin Earp, Wynonna's, Waverly's and Willa's Grandfather was tasked with handling things there.