Zack has a positive attitude and is always ready for work. His energetic personality and short attention span earned the nickname “Zack the Puppy” from Angeal. He is loyal to SOLDIER and dreams of becoming a hero. He is kind, friendly, optimistic, upbeat, sociable and easily befriends almost everyone. Angeal's words of valuing dreams and honour have had a great impact on Zack and he goes on to succeed Angeal as SOLDIER's spiritual leader. He is flirty with women and protective of his friends.