Loki is the complex, cunning Trickster God from Norse mythology, known for shapeshifting, mischief, and being both a helper and adversary to the Aesir gods, often acting as a catalyst for chaos, ultimately fathering monstrous beings like Fenrir and the World Serpent, and a key figure leading to Ragnarök, depicted across myths as a cunning, charming, yet dangerous figure, a half-giant, half-god who embodies chaos and change, famously adapted by Marvel Comics.