Weakness: Stab
Resistance: Crush
The rat king is a giant rat that has consumed the hearts of other rats. A monstrous creature infused with the fear, rage and hatred of its own kind. The magical essence in the hearts infused the rat king, causing it to swell to monstrous size and imbuing it with a terrible hunger it can never sate.
Legend speaks of a rat king so large, that it threatened the entire village of Bramblemead. It was slain by a brief alliance of the Saradominist Paladins and the Guthixian Wild Knights, but not without significant casualties.
The beasts heart was burned over a great pyre in the village, so that no rats might consume any of its remains and threaten a successor rat monarch.