One figure of this name had a daughter that put her own menstral fluid  into the river Vimur.
One figure of this name had a daughter that put her own menstral fluid  into the river Vimur. That figure of this name was the father of Greip and  Gjalp and used a pair of iron tongues to toss a piece of molten material at  a god who had previously been told what was going on by Grid. Another  figure of this name was the son of Hrauthung and received a visit from  (*) Fulla, who warned him of a visitor that no dog was fierce enough to leap  up at. That human king, who was succeeded by his brother Agnarr, has his tale  told in the Grimnismal.  For 10 points, give this name of a giant slained by Thor,  as well as a king who cruelly mistreated a disguised Odin.
One figure of this name had a daughter that put her own menstral fluid  into the river Vimur.
Geirrod [or Geirroth]