After the death of three of his brothers, leaving him with only his eldest brother, Madara, Izuna has grown to care greatly about his family and clan. He's a driven and fearless individual who can be quite stubborn in his beliefs and opinions. He can act taunting around opponents and individuals he dislikes but around his loved ones, he can be very compassionate and caring, even being playful and teasing. Although he doesn't act like it, he's secretly very intelligent and cunning.