The Great Dragon's Roar is one of the most powerful fire-based jutsu in the world. It was said to be developed by Madara Uchiha, and then passed down by the Uchiha bloodline. Gen Nakaido found this scroll while on a sweep for Shinziro operatives and entered a secret Uchiha facility. Aichi Goron and Niguro Satsukamochi learned it from Daigaru Meitochi It is also said that more powerful versions of the Great Dragon's Roar are available. However, the only ninja who knows about these jutsu is Madara. No formulas for these jutsu have been written down.