In Norse mythology, the end-of-the-world event is known as Ragnarok. This cataclysmic battle signifies the ultimate confrontation between the gods, giants, and various creatures, heralding the downfall of the cosmos. Major deities such as Odin and Thor play pivotal roles in this apocalyptic event, which is marked by destruction and rebirth. Ragnarok emphasizes themes of fate, inevitability, and the cyclical nature of existence in Norse beliefs, illustrating how endings lead to new beginnings and reshaping of the universe.