What role do demigods play in Norse mythology and how do they differ from the gods and other mythical beings in the Norse pantheon?

Demigods in Norse mythology are offspring of a god and a mortal. They possess both human and divine qualities, often serving as heroes or intermediaries between gods and humans. Unlike the gods, demigods are not immortal and can be killed. They are also distinct from other mythical beings in the Norse pantheon, such as giants and dwarves, as they have a direct connection to the divine realm through their parentage.