The mythical figure known for carrying a magical hammer is Thor, the Norse god of thunder. His hammer, called Mjölnir, is a powerful weapon used to protect Asgard (the realm of the gods) and is symbolically connected to fertility, protection, and blessing. Mjölnir is not just a tool of destruction; it also has the ability to return to Thor after being thrown. The hammer serves as a significant representation of strength and divine authority within Norse mythology.