Hephaestus shows a strict and hardworking nature. She remains a serene and composed person most of the time, although she also tends to take a serious and professional demeanor when dealing with important matters. She appreciates all the members of her Familia and has great affection for them. As the leader of a faction as prominent as hers she is quite concerned of her Familia's reputation, refusing to make a lower-class weapon due to how it would affect it.