The Iron Soldier
This is the story of Alex Branwen, the first child of Tai and Raven. His life was great until Ruby was born. Soon he was neglected and abused by everyone. Everyone, that is, except Ruby. Ever the kind and caring one, she tended to his wounds, comforted him, snuck him food, and occasionally presents. Then one day Ruby went to check on Alex after a "disciplinary" session to find him gone, with nothing but a note and a picture of him and Ruby. Fast forward ten years later to the Dust shop incident, and a strange armor clad boy comes to her aid.