The god of mischief in Norse mythology is Loki. He is known for his shape-shifting abilities and cunning intelligence. Loki often blurs the lines between friend and foe, crafting schemes that lead both to creative problem-solving and chaos among the gods. His complex character introduces themes of duality and unpredictability, significantly influencing many Norse myths. Ultimately, Loki's actions contribute to the overarching narrative of Ragnarok, where he plays a pivotal role, showcasing how his mischief transforms into outright malevolence.