Laufeyjarson is the mythical being of mischief in Norse mythology, a son of the giants Fárbauti and Laufey, and foster-brother of Odin. He is described as the "contriver of all fraud". He mixed freely with the gods for a long time, even becoming Odin's blood brother.
In mythological terms, is not a god, as he has no cult or followers (no evidence has ever been found or even referenced such), rather he is a mythological or mythical being.