Emperor Ravenwing

The First Wielder of the Mystical Sword and the First Human that can merge them the Tailed Beasts into Dark Gaia and defeats it for good

Legend of Amane Nishiki
Before Samurai Jack is born before the Fortezza Gundam, The Samurai Lord has been pushed to war against Amane Nishiki. Despite having a Powerful Army, He saw Amane in his Nagur form separating his army one by one. He and Amane went into a clash and then finally went into injury on both his one lone soilder and the Samurai Shogun. The Samurai and Amane formed a peaceful village called Hyrule. Just as the Village is formed, The Gods, Ra, Odin and Vishnu bestowed the Samurai a Mystical sword that summons 9 of the tailed beasts that could form back into Dark Gaia. Amane and Samurai Lord are on the rematch, with Summoning Jutsus and the Mystical Swords. The Samurai Lord double dares him that Path of Good against the Sage Transformation. However Amane ends up having a scar on his forehead. He merged 10 creatures together to form dark gaia but was however halted by Carl Klova.