Greg

Greg was first shown in Duel Hero: Beginners Dash but was properly introduced in Duel Hero: Dash - Volume 1.

He is printed on the card DASH Leader Greg released in DMX-12 Black Box Pack.

Plot
He is shown as the boss of DASH organisation and the leader of Duel Hero Yuu and Duel Hero Atsuto. He is the one who gave both Yuu and Atsuto their decks when he sends them out to either help other kids or chidren, or to take down the bullies some times as well. He also organises for both of them before they go out to host any tournament or TV shows.