Cloud Strife: “The true Cloud is open-minded and cares about the bonds he has forged with his friends.”
Squall Leonhart: “Squall starts an introverted, cold and taciturn teenager who pushes away those who would otherwise be considered his friends.”
Yuna: “Yuna is a kind, loyal, honest, and polite humanitarian who strives to see the best in others and has a strong conviction to complete whatever task she feels is her duty. She is, however, naive, always believing the best of people, and often places the needs of others above her own, becoming apologetic when she feels she has let someone down. Like most summoners, Yuna is a devout follower of Yevon’s teachings. She hides her feelings of fear and sadness while encouraging her friends to express themselves in her place. She is willing to carry others’ burdens and sacrifice everything she has to destroy Sin, giving up chances for her own happiness if it means helping others.”
Ace: Despite his age, Ace has a mature speech and attitude, though he has been mentioned to be a rather sensitive boy. He is considered calm but can be reckless and act out of anger. He doesn’t think twice defending his friends from trouble. Ace is reserved toward people outside of Class Zero. In the novel, he is described as putting up his guard immediately. Ace likes chocobos and spends time in the Akademeia chocobo ranch, once having commented how he admires the strong bird.
Noctis Lucis Caelum: Noctis has been described as a complex character who has dealt with a lot of emotional turmoil as his mother died when he was young and his father had to cater to the demands of the kingdom, leaving Noctis feeling alone. Nevertheless, he is not bitter over it, accepting that sacrifices had to be made. Noctis is still trying to figure out who he is and struggles to articulate his feelings. He keeps a lot bottled up, especially with confronting how he feels about his childhood friend Luna. Regis has noted that Noctis was difficult to control and quite rebellious.
Maybe this is because Tetsuya Nomura is an INFP too?