Having great experince with Junk Doppel decks, I decided to upload mine because I felt it close to what I want to achieve with a junk doppel deck. Still not perfect, this deck is aimed at those who have already a deep understanding of Synchro decks, DO NOT simply copy it and pretend to know what you're doing, you're going to miss a lot of timings (hence I do not advise this list for newcomers, but feel free to try it of course). Generally speaking, this deck can evolve during the game into several bosses, each of them having specific traits accordingly to what you're facing. If you're locked out extra deck, you can resolve to use Fortress as an inside deck insurance.