Furui - He was killed by the Eight-Tails during one of its scuffles.Shamon (Second Kazekage) - Killed at the hands of assassins.Mū (Second Tsuchikage) - Mū had a mutual enmity with the Second Mizukage, which ended in both men killing each other in what would be their final confrontation.Gengetsu Hōzuki (Second Mizukage) - Gengetsu had a mutual enmity with the Second Tsuchikage, which ended in both men killing each other in what would be their final confrontation.Tobirama Senju (Second Hokage) - Killed by Kinkaku.A (Second Raikage) - During a formal ceremony he and the Second Hokage were attacked by the Gold and Silver Brothers witch A probably didn't survive.Ishikawa (First Tsuchikage) - Died during the war.Reto (First Kazekage) - Died an untimely death at the hands of assassins.Byakuren (First Mizukage) - Died during the war.A (First Raikage) - Died during the war.Hashirama Senju (First Hokage) - Died during the war.Madara Uchiha (Leader of Uchiha clan)- Kill by Hashirama Senju (later revived himself using Izanagi).Izuna Uchiha - Mortally wounded by Tobirama Senju.Butsuma Senju - Unknown cause of death.Tajima Uchiha - Unknown cause of death.Itama Senju - Killed by Uchiha clan members.Kawarama Senju - He became a casualty to the Uchiha and the Hagoromo clan during the ever-waging battles.Asura Ōtsutsuki - Unknown cause of death.Indra Ōtsutsuki - Unknown cause of death.The Sage of Six Paths - Died in bed, surrounded by his family.Hamura Ōtsutsuki - Passed away in bed, surrounded by his clan.Shiro - Killed trying to save Ashura from a wild boar.Haori - Sacrificed to the God Tree through its sacred ritual.Tenji - Taken by Kaguya's Infinite Tsukuyomi and bound to the roots of the God Tree.Genbu - Taken by Kaguya's Infinite Tsukuyomi and bound to the roots of the God Tree.Suzaku - Taken by Kaguya's Infinite Tsukuyomi and bound to the roots of the God Tree.Aino - Death caused by her protecting Kaguya from a wave of arrows.Before Part I - Before the Warring States Period