This is the Atlas Branch of The Wanderer's, located inside of Mount Celsius. It was carved into the mountain from the west side, facing away from the city of Atlas. Named after the infamous Griffon Grimm, the Atlas Branch is the largest branch of The Wanderers. The reason for this is that The Wanderers deemed Atlas as a place that was very dangerous to their cause. Its military prowess and technology would be incredibly detrimental to them. If Atlas were to focus their forces on just The Wanderers, then it would prove to be a difficult fight for them. As such, they moved their strongest forces to this nation.

Due to their collected power and ferocity, the Atlas Branch has kept most of its competitors in line in terms of criminal activity and alliances. Due to size of their Branch, this group did not form any alliance with the White Fang, nor do they seek shelter from a Grimm settlement.