Packs are local groups of werewolves which have a hierarchy based on the dominance of the wolves in the organization. Each pack is headed by an Alpha, with or without a mate, followed by a second. In North America, the packs are all loyal to, and function under the authority of, the Marrock; this is not the case in Europe. Most packs are named after the location they reside in, however, the Marrock's Pack is named after him.