Gilgamesh is extremely manipulative, egocentric, and selfish, claiming that everything in the world is his possession and that he is the one and only king. He is unable to acknowledge anyone's authority, not even from the gods. He is incredibly proud, especially of his treasure collection. In battle, he is prone to underestimating his opponents and views fights as a game of amusement. His huge ego prevents him from acknowledging his opponent as a real threat and he doesn't take fights seriously.