Ronin is an impressive warrior skilled in many ninja techniques. The speed and agility of Ronin's attacks send his opponents flying. The weapons that Ronin wields on his arms transform into tempered steel blades in battle. He possesses immense strength and speed and is highly durable. Ronin can stand up to attacks from Bakugan such as, Ciel, Pyro, and even more powerful Bakugan like Kraken.
Ronin is incredibly persistent in his goal of hunting down Pyro. According to Razor, Pyro, and Ronin were star pupils of their master, in the Neathian ninja clans. Pyro "left" due to unknown reasons, and Ronin took it as treachery. When he found Pyro's location, he couldn't wait to get his revenge. His unrelenting determination is shown when he effortlessly slices straight through another Bakugan that Pyro was brawling just to get to him. Despite his apparent ruthlessness, Ronin also has a sense of honor and forgiveness. When he learns Pyro's true reasons for "leaving" their clan, he begins to become more understanding, and leaves to go back to the clan, until he returns and decides to brawl with Pyro and Blaze.
Ronin is a Ventus Taylean from Neathia. He was a ninja warrior who belonged to a Neathian clan, in the Neathian-Gundalian War. Along with Pyro, and Razor which were his friends, brothers, and allies in the war. Though when Pyro seemingly "left" Neathia, he and Razor were sent out to find him, thinking he had betrayed their people.
When they finally found Pyro on Earth, in the city of Bayview; they came to apprehend him. They battled him, and lost, when he finally told him what had happened on Neathia. They realized he had been captured by Kazarina's Gundalian forces, and taken to a lab where he was rescued by Fabia Sheen, the battle brawlers, and other brawlers; namely Firestormblaze. So they went back to Neathia, without Pyro, and cleared his name. Ronin later returns in the fight against The Psychic Master, alongside Razor.