Loki is the father of several monsters: the serpent Järmungand, the wolf Fenrir and the underworld goddess Hel. He is also the mother of Odin's eight-legged horse Sleipnir. Loki is capable of shapeshifting; he is as impulsive and irresponsible as he is clever and cunning. Loki sometimes assists the gods and sometimes behaves maliciously towards them. God of mischief, discord and illusions in Norse mythology. Rogue god and genius of fire