In Norse mythology, the god of thunder associated with the hammer Mjölnir is Thor. He embodies strength, protection, and the fight against chaos, often depicted as a defender of gods and humans alike. Thor's battles against giants and other threats highlight themes of valor and courage, serving to protect the cosmos from destruction. His character illustrates the Norse values of bravery and resilience, making him a central figure in the mythological landscape and widely admired in popular culture today.