Madara Uchiha's most defining trait is his monumental ego. He is an extremely egocentric, manipulative and conceited man who cares only about might and skills, which shows as he belittles everyone he deems weaker; including the immensely powerful Kage and the formidable Kurama. He's cunning, manipulative, and power-hungry. He is known for his strong sense of pride and his willingness to do whatever it takes to achieve his goals.