Whitemane was a Soletaken who could transform from an unprepossessing man into a fat, cat-sized rat. He was "a clever and vicious tyrant" of the city of Lamentable Moll's rats and was known as the "Ruler of the Furred Kingdom" and the "Slayer of All Challengers." His legion of vermin served as runners, junction guards, rooftop peepers, and food tasters.
Whitemane was deeply afraid of the killer who had been stalking Moll's streets and hid in his deepest lair. When the necromancer Bauchelain defended himself from the Mortal Sword Tulgord Vise in Fishmonger's Round, he shattered the barrow where Whitemane was hiding. As Whitemane tried to scurry to safety, Bauchelain summoned a Kenyll'rah demon to catch him. The demon grabbed the large rat and popped it into his mouth before Bauchelain could stop him. The necromancer made the demon spit the rat out. Korbal Broach made to collect the still living creature before he was interrupted by the appearance of the rat-hunters, Birklas Punth and Blather Roe. In the resulting confrontation, Whitemane escaped.