Five Hargreeves has a crotchety, arrogant, and hyper-intelligent personality. Despite his youthful appearance, he has the world-weary consciousness of an old man. He doesn't even attempt to hide the fact that he thinks he's the smartest person in the room. He is wise. Talks so smart and acts so smart too. Very skilled with almost everything and is very matured for his age. Five can appear rude and blunt. He is a smartass. Very knowledgeable. Both book smart and street smart.