The god of mischief in many mythological tales is Loki in Norse mythology. He is renowned for causing trouble among the gods, often using his cleverness to manipulate events to his advantage. Loki's character embodies a complex duality, representing both chaos and helpfulness. His antics lead to significant consequences, including the events surrounding the Ragnarok, where his betrayal plays a pivotal role, showcasing the thin line between friend and foe in mythological narratives.