Earned the nickname/title of the "Silver Demon" in the Underground; White doesn't really care for it but Yellow is mainly amused by it. They run a Burn deck fairly similar to his Battle City deck (though, occasionally White will switch in some cards he prefers when he duels, but...). His getup is somewhere between a Hell Kaiser jacket and Thief King cloak.
He's been on the shock collars long enough to begin to develop heart problems, but not long enough for them to grow severe yet. In fact, he's probably not even aware he has them; he probably doesn't have quite the stamina of any of his doubles, and occasionally has chest pains. Also, as a strange side effect of being around electricity and static electricity and being shocked, his hair is a little... fluffier than most.
Roughly 16 and a half; would be in his second year of Duel Academy if he hadn't dropped out.
Yellow is hardly phased by the various horrors of the Underground, so White has taken the brunt of all the trauma. As a result, he's generally quieter and more reclusive when he can and cold, standoffish, and bitter when he can't just ignore people. As a means of survival, really, he learned to mimic his Ring Spirit the way he learned to mimic Ryou; but after months of putting up a persona, he's begun to develop some more YnB-ish tendencies. And he's not happy about that at all. While he does not like the Ring Spirit at all, he considers it something of a "lesser of two evils" to the Underground.
He'll probably try to avoid anyone he knew from the Academy (read: the main DM cast) since he's pretty ashamed of what he's become.