Delinquent 1

Thug A, unnamed in the manga, is a member of a menacing trio of grungy youths who tricked Tomoya Hanasaki into helping their criminal undertakings. His name was given in the Dungeon Dice Monsters video game.

Biography
"Thug A", along with "Thug B" and "Thug C" were paid by Hanasaki's father to create false crime scenes and allow Hanasaki, dressed as Zombire to fight them off.

However when Hanasaki's father was unable to meet their price demands, the three attacked Hanasaki and revealed that his father had paid them to let him beta them earlier.

Dark Yugi then arrived to save Hanasaki. As the gang chased him, he left a trail of spray paint, starting at a cigarette butt, "Thug A" had dropped. As the butt burned away, it acted as a fuse. After the paint caught fire, it created a maze of fire, leaving the gang dash out and jump into the water.

Crest Pool
In the Dungeon Dice Monsters video game his Crest Pool consists of Beasts and Zombies.