The series began airing on Apon the Canadian network Teletoon and then on Cartoon Network on May 9, 2009. In March 2009, TMS and Nelvana Entertainment companies announced that a follow-up series, Bakugan Battle Brawlers: New Vestroia, consisting of 26 episodes was in production. Main article: List of Bakugan Battle Brawlers: New Vestroia episodes But Ren is secretly trying to get the Gundalians to win the war, so Fabia and her planet has been trusted by the Battle Brawlers and hopefully they'll protect Bakugan Interspace, Neathia (which is Fabia's home planet) and possibly Earth from being ruled by the Twelve Orders. In Gundalian Invaders, Dan, Marucho and Shun get caught up in a war between two different alien factions in another universe, and teaming up with three new brawlers, Princess Fabia (Princess of Neathia), Jake (who is Human), and Ren (who is an undercover Gundalian) in order to stop the evil Gundalian Protectors, the Twelve Orders from destroying Neathia, and possibly, Earth. They allied with the Bakugan Battle Brawlers Resistance: Mira, Ace, and Baron in order to stop an evil group known as the Vexos from stealing the bakugan from New Vestroia, and possibly, the whole universe, later the Vexos take revenge as they try to destroy the Bakugan, and that's when the brawlers come in to save New Vestroia.

In New Vestroia, Dan, Marucho, and Shun are called to the newly restored Vestroia to stop an alien race called the Vestals who invaded it. Together they learn more about the origin of the Bakugan, Vestroia, the game involving them, and the battle against people who are under Naga's control. They name themselves the Bakugan Battle Brawlers and consist of seven children: Dan, Shun, Runo, Marucho, Julie, Alice, and later Joe.

In the first season, the story centers on six friends who find metallic cards which have fallen from the sky or to be more precise, Vestroia itself. The Infinity Core, the source of positive energy had been absorbed by Wavern. However he absorbed too much power and energy found within the Silent Core, the source of negative energy. In the parallel world of Vestroia, a powerful Bakugan in search for power named Naga decides to absorb the energy of the two opposing cores that preserve the balance and peace in Vestroia. Main article: List of Bakugan Battle Brawlers characters

Bakugan battle brawlers naga