In Norse mythology, numerous talkes and information about him are found. He is described as having red hair with fierce eyes. He has fourteen different names and is the husband of the Goddess Sif. His mistress is the jotunn jötunn Járnsaxa. With Sif he fathered Þrúðr, and possibly the valkyrie. With Járnsaxa he fathered Magni. With an unknown mother he fathered Móði, and is the step-father of hte God Ullr. His parents are Odin and Fjörgyn. He also has numerous brothers.
He has two servants, Þjálfi and Röskva, and rides in a chariot led by two goats named Tanngrisnir and Tanngnjóstr (that he eats and resurrects). He is known to have three homes (Bilskirnir, Þrúðheimr, and Þrúðvangr). His weapon is the mountain-crushing hammer, Mjöllnir, wears the belt Megingjörð and the iron gloves Járngreipr, and owns the staff Gríðarvölr.