Humphrey's Little Group, is a small group of wolves led by Humphrey whose primary jobs are to maintain the peace in the pack. They are friends, and like to fool around sometimes.
Humphrey and his band of Omegas are the Peacekeepers of the Western pack, always there to break up fights and remind everyone to have fun. It can be assumed that they maintained their roles after the uniting of the packs.
In the movie, they are the only wolves seen to frequently logboard for a pastime.