Xyber 9: New Dawn

Ikira's Secret (1x10)

:

After being chased through the sewer by tunnel rats on their way out of the Underworld, Jack and Ikira return to the group with a mysterious key. Only Xyber 9 knows what it unlocks. Everyone else is left to wonder. But the mystery of the key becomes old new quick when Ikira's deepest darkest secret is revealed. He has been a Machina all along!!!