B.F.F. - Best Friends Forever
While searching their website for information on the Infinity Core, the Brawlers discover a lead, which takes them to a huge castle in Germany. There, they meet the number two world ranked Bakugan player, Klause Von Herzon. Klause challenges Marucho and his Bakugan Preyus to a battle. The battle is intense and results in Preyus being sent to the Doom Dimension!