Final answer:
Gilgamesh is an epic hero because he possesses heroic qualities and goes on a grand journey or quest.
Step-by-step explanation:
An epic hero is a character in an epic poem who possesses heroic qualities and goes on a grand journey or quest. Gilgamesh, the protagonist of The Epic of Gilgamesh, exhibits several characteristics that make him an epic hero.
Firstly, Gilgamesh is depicted as incredibly strong and powerful. He is described as two-thirds divine and one-third mortal, giving him superhuman strength and abilities. This is exemplified in the epic when Gilgamesh battles and defeats the monster Humbaba. His physical strength is a key aspect of his heroism.