Originally, Baron fought with Tigrerra, but lost her to Spectra and Viper Helios. He used Haos Ancient Nemus as his main Bakugan and uses Piercian as his Trap Bakugan. In Surprise Visitor, he says that he had always wondered what it would be like on the other side of the portal, which was the portal that led Runo to New Vestroia from Earth. In the end, he decides to follow Dan, Mira, and Runo to Earth in order to stop the Vexos from destroying it. Baron admires Runo as one of the six original Battle Brawlers but Runo's father does not like the fact that he does. He returns to New Vestroia with Dan through Dr. Gehabich's dimension transporter. He seems to be very fond of the activities done on Earth, especially by Dan e.g. taking baths. In Beta City Blues, he and Dan made it back to New Vestroia where they battled Mylene and Shadow in Beta City. Baron was defeated helping Dan and Drago, but he still was able to keep Ancient Nemus. He returns to Vestal with Ace and Mira with their Bakugan, in case the Vexos will want to take back New Vestroia for themselves in the future. In Revenge of the Vexos, after the Vexos return Baron brawls Prince Hydron and loses the Haos attribute energy. Baron is currently 12 years old, confirming this in the English version by saying, "I'm almost 13 ya know!" He is a huge fan of the Bakugan Battle Brawlers and the six fighting Bakugan as displayed by his reaction to first meeting Dan, Marucho, Drago, and Shun. He seems to always embarrass himself in front of Dan, Marucho, and Shun. According to Mira, he has a poster of the Bakugan Battle Brawlers up on his wall. From what was shown in Revenge of the Vexos, Baron has a large family and is very caring for his many younger brothers and sisters. He is the youngest and most emotional of all the brawlers.