Kain

カイン, Cain, Ferocious Bull (猛牛), The Bull, Altea Knight, King's Voice, Altea's Blade, Ember of Calamity
Cain is a playable character from the Archanea Series of Fire Emblem. Alongside his boon companion Abel Cain is a cavalier of Altea who is also known under the alias of The Bull. According to Takayashiki Hideos novel adaptation of Mystery of the Emblem Cain is 24 years old. Source: Fire Emblem Wikia