| Dr. Root |
|Voice Actor|| Derek Stephen Prince |
(Season 2 and 3)
|Signature Card(s)||Gigaberos, Geki and Metsu|
His first name is Leroy.
He is George's boss as well as a mad scientist and expert duelist. He has also designed a human-resembling robot named Mr. Perfect and a giant pilot-able robot. His eccentric methods always have some hidden lesson to help Shobu and his friends.
In Duel Masters Zero, he takes charge of training Shobu and his friends.
A part of his head is also covered with a purple patch.
- Blazosaur Q
- Smash Horn Q
- Natural Snare
- Spikestrike Ichthys Q
- Balloonshroom Q
- Split-Head Hydroturtle Q
- Bladerush Skyterror Q
Duel Masters: Volume 8 Chapter 2
He won against Shobu using these cards.