Mud was one of the first Aspen and Ghost managed to persuade to join the fledging Tapeesa pack. He was young then, young and foolishly eager to please, yet Aspen and Ghost were younger still and somehow the prospect of enduring hardship with them did not phase him.
While Aspen was only learning her way around assigning everyone roles, a strange black wolf and Ghost advised her to let Mud scout the terrains around the pack and establish their borders. Aspen was hesitant, and Mud was terrified at the idea of going into unknown lands on his own, but he tried not to show it in the face of that strange black wolf.
Later that same day, on his very first scout, Mud discovered that this was his true calling, and not looking after the pups.
After his first confrontation with a stranger, a great grey wolf with a muzzle of piercing black fur, whom he, a scrawny barely two year old, scared off from the scent of their dwindling food pile, Aspen immediately granted him independence over where he, and the other scouts, would patrol and when.
He was made de facto Leader of the Watch after Storm became a scout.