Not sure what can this guy offer in duel links aside from Red Eyes Darkness Dragon, Red Eyes Wyvern, Mirage Dragon, Swing of Memories (which 3 of these are GX cards) are already in the game.
I could see them doing something like Red-Eyes Darkness Dragon, Red-Eyes Retro Dragon, Red-Eyes Fusion, Lei Lei and some existing stuff like Burst Breath, Cave Dragon, Mirage Dragon, Swing of Memories, Red-Eyes Spirit, etc. to fill out his level rewards and drops. Maybe add a few generic dragon cards like Lancer Dragonute or Sniffer Dragon for good measure.