Yu-Gi-Oh! Duel 22: "American Hero (Part 1)"
Thug A, known as Delinquent in the Japanese version, is a member of a menacing trio of grungy youths who tricked Tomoya Hanasaki into helping their criminal undertakings. His Japanese title is given in Yu-Gi-Oh! Character Guidebook: The Gospel of Truth. His English title was given in the Dungeon Dice Monsters video game.
The next day at school, Thugs A and B, questioned Yugi about knowing Hanasaki, however Hanasaki arrived and told them to leave.
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 beat 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.