A Warrow of the Boskydells, and traveling companion of Peregrin Fairhill.

Cotton was hired by Holly Northcolt upon her taking charge of the Root, and determining that they needed a handywarrow. In addition to doing odd jobs for Perry, Cotton regularly did janitorial work for Mayor Will Whitlatch. He was unusually devoted to Perry's well-being, and was determined to accompany him on the journey to retake Kraggen-Cor, despite being apprehensive about the dangers of battle.