Who is stronger than Odin?

In Norse mythology, characters such as Thor and the giants (Jotnar) can challenge Odin's strength, but none are definitively stronger in all aspects. Additionally, entities like the World Serpent, Jormungandr, and certain cosmic beings in various mythos may possess power that rivals or surpasses Odin in specific contexts. However, in terms of overall authority and wisdom, Odin is often regarded as the most powerful among the Aesir gods.