Idunn is the final boss of Fire Emblem The Binding Blade. During the manakete genocide, she was captured by dragons and corrupted into a mindless sex slave to repopulate their numbers. This was for naught, as the dragons were defeated and Idunn sealed away with the power of the Binding Blade. King Zephiel, the antagonist of The Binding Blade, removed the seal and used her to assist in his military conquest. If Roy defeats Idunn with the Binding Blade, she survives the final battle and her mind is restored by the divine dragons.