Regulators

Lead by the sadistic Caleb, the Regulators are a vicious gang that serves as the "police force" of Adytum. Nominally under the authority of Adytum's mayor, Jon Zimmerman, they in fact manipulate Zimmerman and control Adytum's affairs, ruling harshly, expropriating a good part of Adytum's industrial wealth for themselves, and enforcing forced labor on Adytum's citizens. To legitimate their authority, they have claimed that the Blades, a survivalist group to the north, are a threat, and frame them for crimes such as the murder of Jon Zimmerman's son.

In Fallout 3, the regulators are a group of vigilantes, who wear cowboy style hats and dusters and live in a farmhouse. If the palyer has the lawbringer perk, they can bring them fingers taken fro mthe corpses of evil humans killed by the player, for good karma and 10 caps.

Appearances in games
The Regulators appear in the original Fallout and are slated to be a faction in Fallout 3.