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Bakugan: Gundalian Invaders (ガンダリアンインベーダーズ Gandarian Inbēdāzu) is the third season of the anime series, Bakugan Battle Brawlers. It contains a total of 39 episodes and made its debut on May 23, 2010 in Canada and on May 29, 2010 in the United States. The original Japanese version began airing on April 3, 2011 on TV Tokyo at 9:00 AM JST.
Dan Kuso, Marucho Marukura, and Shun Kazami get caught up in a war between two different alien factions in another universe, teaming up with three new brawlers: the Neathian, Fabia, the new human, Jake, and the undercover Gundalian, Ren, in order to stop the evil Gundalian Protectors, the Twelve Orders, from destroying Neathia, and possibly Earth. They meet these extraterrestrials when they enter through the virtual reality Bakugan Interspace. At first, the Brawlers are deceived into thinking that Neathia had started the war against Gundalia but, as the story progresses, the Brawlers realize that its actually the other way around. The stakes are high! Will the Battle Brawlers defeat the Twelve Orders, saving the Bakugan once more? Or will they lose this time?
- Dan Kuso : The main character of the series. He uses the Pyrus Attribute.
- Marucho Marukura : The brain of the group who uses the Aquos Attribute.
- Shun Kazami : The ninja Ventus brawler.
- Jake Vallory : The new Subterra member of the Bakugan Battle Brawlers who lives in Dan's new town.
- Fabia Sheen : The new Haos Brawler and sister of the princess of Neathia.
- Ren Krawler : The Gundalian traitor. He started with the brawlers (spying for Gundalia), then back with the Gundalians, then recently, back with the Brawlers as a Castle Knight. He uses the Darkus attribute.
- Serena Sheen: The queen of Neathia, she is also Fabia's older sister. She doesn't battle, but sends Fabia to get the brawlers and watches over the city.
- Captain Elright : The Captain of the Neathian Force.
- Bakugan: Raptorix
- Julie Makimoto: Moved to Bayview like Dan. She helps Jake with his first battle in Brawler to Be as a former Subterra brawler.
- Linus Claude : One of the strongest Brawlers on the Neathian side and a Castle Knight. He is a Pyrus brawler.
- Barodius : The Emperor of Gundalia and the Darkus Brawler of the Twelve Orders.
- Kazarina : The Haos Brawler of the Twelve Orders. She was always by Barodius' side.
- Gill : The Pyrus Brawler of the Twelve Orders.
- Airzel : The Ventus Brawler of the Twelve Orders.
- Nurzak : Originally the Subterra member of the Twelve Orders, he eventually defects to Neathia. After winning the war, Nurzak declares he will return to Gundalia to form a new government as well as forge only friendly relations with their neighbors, the Neathians.
- Stoica : The Aquos Brawler of the Twelve Orders.
- Ren Krawler : See above
- Sid Arkale
- Lena Isis
- Mason Brown
- Zenet Surrow
- Jesse Glenn
New Game Features
- Bakugan Battle Gear
- Reference Cards
- Bakugan Super Assault
- Special Evolution
- Bakugan Mobile Assault
- Bakugan Deluxe Battle Gear
- DNA code
- Ready Go! by Sissy
- Mega Meta by Yu Kobayashi
- Love The Music by LISP feat. Kobayashi Yu
- Tan Kyu Shin by Kreva
- Love Go! Courage Go! by TAKUYA
- This is the only series where the Battle Brawlers do not go to Vestroia/New Vestroia.
- This is the only series that does not contain an Attribute-changing Bakugan, although Gate Cards are able to change a Bakugan's attribute.
- This is the only series that Preyas, Blade Tigrerra, Wavern, Alpha Hydranoid, Hammer Gorem, and Storm Skyress have not appeared in.
- This is the only season in which every Bakugan seen was produced as a toy.
- However, Blitz Dragonoid's toy looks completely different than he does in the anime.
- Dharak and Drago are the only Bakugan that have evolved in this season.
- This is the first season to not have a total of 52 episodes.
- It is also the shortest season of the series as a result.
- When the title screen came up in a few episodes, it switched the Subterra and Ventus symbols around.
- Beginning in the second half of this season, G-Powers had no bearing on the results of a battle. This continued in Mechtanium Surge, until End of the Line.
- This season also marks the first time that Dan had another Guardian Bakugan other than Drago (not including when he had to use Apollonir).
- Dan was the only one of the Battle Brawlers to use Mobile Assault Vehicles.
- This is the first season where the main antagonists were adults.
- This is the only season without a masked brawler; Season 1 had Masquerade, Season 2 had Spectra Phantom, and Season 4 has Mag Mel and Wiseman.
- It is the first season where the Japanese opening theme song is not performed by Psychic Lover.