King Agak is the successor of Kingdok after his death. He is about as powerful as Kingdok but not as smart. He is said to be tall but not as tall as Kingdok. He is appeared to many various sharp rows of teeth and is well built better than other rat creatures. He becomes allied with the Nacht's henchmen in the first book and agrees to capture both the people on the skyship and Stinky and Smelly. Although he is allied with the Constable he is now impatient and angry at the Constable for treating him like a lacky.