Talk:Yu-Gi-Oh! Underground/@comment-5298730-20150622012118/@comment-7341673-20150622014946

No, they do not. Originally, there was supposed to be a 5th gang, the "Scales Gang" and they would use them, then they were meant to be added in at a later point in the story (being developled as a project of all 4 Gangs), and then they just ended up being removed.