Loki is the trickster of Norse myth — a figure of cunning, transformation, and disruption. He is 'blood-related' to the gods (son of the giant Fárbauti in one account) but is not a true Æsir; he is a complex, ambiguous figure who helps the gods (he wins Sif's hair, the ship Skidblaðnir, and Thor's hammer, all through trickery) and who also destroys them (he engineers Baldr's death and will lead the enemies at Ragnarök) [S1][S2]. His children are among the greatest threats to the world: the wolf Fenrir (who will kill Odin), the world-serpent Jörmungandr (who will kill Thor), and Hel (who rules the realm of the dead) [S2]. At Ragnarök, Loki fights against the gods and is ultimately caught by the river-vine and slain by the serpent's poison [S1][S2]. Loki is the great ambivalent figure: helper and destroyer, the one who holds the fate of the world in his cunning [S1][S2].