Muskeg is the son of Reindeer, pack leader, and one of the most favored wolves who'd ever lived in the pack. Because of this he was never ran off. He is ferociously loyal to his mother and will serve her till the end.
Mentored by Exodus he has learned that same ferocity the other male has. That paired with the fact he doesn't seem to always get along with everyone, coming across as mean or grouchy has really made wolves think of him as a vicious wolf.
This isn't true if one truly got to know him. Muskeg may often times say what he is thinking offending others and he is definitely weary of new wolves but he is really gentle underneath. He has passions and dreams, longings and hopes. He wants to see his pack grow and be healthy. He hopes for the future. He hopes for healthy land and pups to raise on the land. He longs to be loved like he loves, with his whole heart.