Dan is the leader of the Bakugan Battle Brawlers. He tends to rush into things, but makes up for this with a strong sense of justice. He loves battling with his Pyrus partner Drago.

Marucho has a brilliant strategic mind. Marucho is the co-creator of the exciting Bakugan Interspace, which allows kids to battle freely. An Aquos Battler, Marucho gets along very well with Akwimos.

Shun is a calm battler who uses ninja attacking moves and is a master of Bakugan Battle Brawling. After hearing there are Bakugan battles going on, he and moves to Dan's new city. A Ventus Battler, he has absolute trust in Hawktor.

Even though Julie can be a scatterbrain, she competes along with the best Bakugan Brawlers. She is a Subterra Battler. Julie is happy and bubbly compared to most Battle Brawlers!

Jake is a new friend of Dan who made friends with him when he came to his new town. He has a powerful presence, because he is big for his age. He is very calm, but can get excited and obsessive. Jake is a Subterra Battler and partners with Coredem.

Ren is the leader of secret agent group sent by Emperor Barodius to infiltrate Earth to find the DNA code. He is an alien from the underground world of Gundalia, and he possesses a dark Bakugan with a very powerful ability. He is an exceptional Darkus Battler. Ren teams up with Linehalt to do battle.

Fabia is sister to the ruling Queen of Neathia. Brave and valiant, she goes to Earth to find comrades to help fight along side the Neathians. Fabia is a very clever Haos battler. Teamed up with Aranaut, she is ready to battle to save Neathia.

The Emperor and Gill recruited Airzel to be a warrior. He lurks in the shadows, protecting Barodius as part of the 'Twelve Orders'. A Ventus Battler, Airzel because the #1 trainer on the Special Bakugan Team. He partners with Strikeflier.

Barodius was born into the family that has ruled Gundalia for generations. A Darkus battler, he is the leader of the evil 'Twelve Orders' which reigns over Gundalia and seeks to conquer Neathia. Barodius has overwhelming strength and ability to execute battles simultaneously. Barodius battles with Dharak.

Gill is a calm, cool warrior who pledges loyalty to the Emperor, who he looks up to like an older brother. If ordered by Barodius, he will go to battle regardless of right or wrong. A Pyrus Battler, Gill trained the Special Bakugan Team that is in charge of protecting the Emperor. Krakix and Gill team up during battle.

Nurzak is a very clever Subterra Battler. Although he's the oldest of the 'Twelve Orders', he has the most physical energy. The Emperor trusts Nurzak and he is very good at analysing the opponent, planning strategy and evaluating the situation. His chosen Bakugan is Sabator.

Stoica has a split personality: when he's an angel he is fun to be around, but when he is in devil mode, he is frighteningly cruel and no one can stop him. An Aquos Battler, he has saved Gundalia many times with his battling abilities. The youngest of the 'Twelve Orders', he partners with Lythirus.

A sly, cold-hearted female battler who is always by the Emperor Barodius' side, Kazarina works as the Director of the Bakugan Biological Research Centre. There are rumours she is secretly undergoing cruel living-body experiments to heighten the Bakugan's abilities. A Haos Battler, Kazarina partners with Lumagrowl.