Ike "Radiant Hero, Hero of Blue Flames, Emblem of Radiance"
About
In Fire Emblem Engage, Ike's spirit resides in the Ring of the Radiant Hero which was given to Solm by Queen Lumera to safeguard. Princess Timerra of Solm kept the ring safe by traveling the Solmic Deserts with it, keeping its location unknown.
(Source: Fire Emblem Wiki)