Loki is a complex figure in Norse mythology, often depicted as a trickster god associated with mischief and chaos. He is known for his cunning nature and ability to shape-shift, which allows him to take on various forms. Despite being a companion to the gods, his actions often lead to trouble, making him a controversial character in the pantheon. Loki's relationships with other gods, particularly Thor and Odin, are pivotal to many myths. His role culminates in the events of Ragnarok, where he leads the giants against the gods, showcasing his dual nature as both a friend and foe to the divine beings of Norse lore.