Crom

The merciless god of the Cimmerians.  He is grim and cold.    Living in his Mountain, he judges the slain by the honor and courage shown in their lives.  Those worthy enough are granted life after death in Valhalla.    

According to Conan the Barbarian, Crom asks all who come before him a Riddle of Steel.  Those who can not answer the riddle are cast out of Valhalla and laughed at by Crom.