In the third season of Bakugan Battle Brawlers, Bakugan: Gundalian Invaders, we follow Dan, Shun and Marucho on their new adventures. As they are drawn into battle against the Gundalian Protectors of the Dark Bakugan and the Twelve Orders, they meet up with the new Battle Brawlers in Gundalian Invaders: Jake Rockwell (the new human), Fabia (the Neathian) and Ren (the Gundalian).
Here is an overview of the Battle Brawlers that the third season will revolve around:
Dan continues as the main character and the leader of the Battle Brawlers. His Guardian Bakugan is Helix Dragonoid, and his Battle Gear is JetKor. It is unknown if Fire Scorpion (Bakugan Trap that evolved from Dan's Bakugan Trap, Scorpion) will appear in the Anime.
Marucho is considered the brain of the group, and he is the most intelligent of the brawlers. In Gundalian Invaders he has a new outfit (see picture). He uses the Aquos Attribute, and his Guardian Bakugan will be Akwimos. His Battle Gear is rumored to be Battle Saber.
Shun is an aspiring ninja who gets his training from his grandfather. According to the Bakugan official site, he will have a new outfit in Gundalian Invaders (see picture below). Shun is a Ventus brawler, and his Guardian Bakugan will be Hawktor. His Battle Gear is Swayther.
Jake is 14 years old. He is Dan's new friend after he arrives in Neathia, and he becomes the new Subterra member of the Battle Brawlers. His Guardian Bakugan is Coredem, and his Battle Gear is Rock Hammer.
Fabia is 15 years old, and she is the new Haos member of the group. Her sister is the queen of Neathia who is missing, and Fabia is battling to save her. Her Guardian Bakugan is Aranaut, and her Battle Gear is Battle Crasher.
Ren is 16 years old. He is an undercover Gundalian who works for Emporer Barodius. He is sent to Earth disguised as a human, and his mission is to find the strongest brawler and DNA code to help defeat Neathia. Ren is a Darkus Brawler. His Guardian Bakugan is Darkus Linehalt, Aquos Phosphos and Subterra Avior. His Battle Gear is Boomixx.