I don't think they've ever retconned the Virtual World arc or Atlantis arc out of the Yugioh canon. Are you trying to go off of the manga canon or something? Duke could be included if they feel like adding Tristan as playable too. Rebecca Hawkins could also make the cut.
No, no more DM characters. We already have too many characters (I mean did anyone (at least 50%) want Bonz, Espa Roba, or pathetically easy Tristan to even appear in this game? I sure didn’t)
DJ Sterf
Darkfire