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Bakugan: Gundalian Invaders (Japanese version Bakugan Battle Brawlers: Gundalian Invaders (爆丸バトルブローラーズ: ガンダリアンインベーダーズ, Bakugan Batoru Burōrāzu: 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
- This Is Bakugan - Creighton Dan and Daniel Leblanc
- This Is Bakugan (Instrumental Version) - Ending
- Japanese Openings
- Japanese Endings
- Love The Music by LISP feat. Yu Kobayashi (1-13)
- Tan Kyu Shin by Kreva (14-31)
- Love Go! Courage Go! by TAKUYA (32-39)
- This is the only season that does not:
- Have the Battle Brawlers visit Vestroia/New Vestroia.
- Contain an Attribute-changing Bakugan, although Gate Cards are able to change a Bakugan's attribute.
- Have Preyas, Blade Tigrerra, Wavern, Alpha Hydranoid, Hammer Gorem, and Storm Skyress appear.
- A villainous masked brawler. (Season 1 had Masquerade, Season 2 had Spectra Phantom, and Season 4 has Mag Mel and Wiseman.)
- Have its Japanese episodes named after song titles.
- This is the only season in which every Bakugan seen was produced as a toy. (Although Blitz Dragonoid's toy looks completely different than he does in the anime.)
- This is the first season where the main antagonists were all adults.
- It is the first season where the Japanese opening theme song is not performed by Psychic Lover.
- Dharak and Drago are the only Bakugan to evolve in this season.
- It is the shortest season of the Bakugan Battle Brawlers series, with only 39 compared to the previous two seasons' 52, and Mechtanium Surge's 46.
- A few episodes' title screens switched the Subterra and Ventus symbols around.
- Beginning in the second half of the season, G-Powers had no bearing on the results of a battle. This continued in Mechtanium Surge until End of the Line.