Boss Duelists

Boss Duelists are a group of Evil Duelists and main Antagonists that appears in Manny, Yugo, Twilight and Joe's show series. Which it possible that the Boss Duelists is really Interactive with the all Duel Masters except One they hate a most the sixth Duelist himself.
But it seems so many times that Manny and his Friends encountered them the Stronger and Toughest are getting. In The Manny Centurions The Clash of Kaijudo: Versus Revolution Final X, Boss Duelists is a most powerful and master skilled Kaijudo Duelists in the Kaijudo Alola City who was formed to destroy sixth Duelist that ruin everything for them from not getting a chance to duel against the oppose Duelists themselves
===Known Boss Duelists===
Bols 
===Gallery===