Rafe is a young, patriotic soldier with the Neathian Castle Knights. He has been sent to Earth and Interspace to train with the Battle Brawlers. Wolfurio is his partner Bakugan.
Brilliant Marucho has made Bakugan Interspace into a worldwide phenomenon. A loyal friend, Marucho often finds himself caught in the middle between Dan and Shun. His battle style is to use "brain over brawn." His partner Bakugan is Tristar.
Anubias is the leader of a new powerhouse team storming Bakugan Interspace. He admires Dan's battle style and is determined to claim the title as number one. Horridian is his partner Bakugan.
Spectra's battle style is cool and focused. He immediately anticipates his opponent's moves and rarely loses a battle. When Dan is gone, Spectra battles alongside Marucho, Shun, and Helios, his partner Bakugan.
Robin is the quiet battler on Team Anubias. Much like Shun, he has strength and stamina in battle and rarely lets his emotions override his actions.
The leader of the Bakugan Battle Brawlers, Dan is the number one ranked battler in Interspace, and has an avid fan base. His partner Bakugan is Titanium Dragonoid (Drago). Dan, along with Drago, is haunted by disturbing dreams and visions.
Sellon is the beautiful and elegant leader of Team Sellon. Although she sometimes clashes with Anubias, they are united in their goal to take down Dan and Drago.
A stoic battler who uses ninja attacking moves, Shun isn't happy with the new style of battling in Interspace. Instead, he tries to keep his battles true and clean. When Dan starts acting strange, Shun declares himself the new leader of the Brawlers. His partner Bakugan is Taylean.
Mag Mel is the mysterious masked entity who haunts Dan's darkest dreams and often appears to him as a vision, especially during battle.
A former soldier from Gundalia, Paige has been sent by the Queen of Neathia to train with the Battle Brawlers. She's completely fearless in battle and quick to be the first to throw down. Her partner Bakugan is Boulderon.