Stream anime episodes for free, you want to Watch Bakugan Gundalian Invaders Episode 4 English Dubbed online for free. Episode guide Bakugan Gundalian Invaders Episode 4 English Dubbed Brawler To Be Dan gives Jake a practice match, but Jake feels he is not ready to become an official Bakugan Battle Brawler. When another mole, Mason Brown, is located, Dan challenges him to a battle, but Jake steps in and wants to prove himself. Due to his inexperience, Jake quickly loses and feels he has failed Dan in proving himself. The next day, Jake is still upset over his loss, so Julie, being a Subterra master, offers to help him discover his own battling style. Jake returns for a rematch with Mason while being greeted by a bitter crowd. With his newfound confidence, Jake easily defeats Mason. Before the Brawlers can pursue Mason, he teleports out of the stadium. Dan congratulates Jake, who becomes an official Battle Brawler.