Bakugan Battle Brawlers

The story begins with a young boy named Dan who has never lost a Bakugan match. While in a match against a bully Dan sees a vision of two Bakugan brawling. Is there more to the game than what the players think?

A mysterious Bakugan player named Masquerade, who is ranked at #1 on the list of Bakugan players, is stealing Bakugan from players worldwide. Dan makes an open challenge to Masquerade, and loses two of his Bakugan to this mysterious player, thanks to a Doom Card, which makes a Bakugan disappear forever. Dan is lucky enough to not lose Drago, but might if he loses to Masquerade again.

Masquerade teams up with a player with Rikimaru, by giving him a very special Bakugan. When Rikimaru and Dan battle, Drago ends up using a dangerous move to save himself and win the battle. Dan gets angry, and throws Drago into a river, cursing the day they met.

Dan has a hard time adjusting to life without Drago. He ends up causing a schoolmate named Ryo to drop his computer and runs away, hurting Ryo's feelings. Masquerade takes advantage of Ryo's hurt feelings, and Ryo beats Dan in a battle. Dan finds Drago, and tries to make up with Ryo.

Dan and Runo meet for the first time, outside of the Bakugan website, and realize that they live in the same town. Dan drops his BakuPod, and Runo picks it up, noticing that Dan has battled Masquerade. She goes in his place, but ends up battling a boy named Tatsuya.

While at an amusement park, Dan and Runo are invited onstage to assist a magician act by two brothers. Dan picks a card, and realizes it's a Doom Card. The brothers are working for Masquerade, and Dan and Runo get tricked into a battle.

The peace of New Vestroia does not last long. A race called the Vestals invade and colonize New Vestroia, turning the Bakugan back into balls and making them their slaves for amusement, not knowing that Bakugan are intelligent creatures. One by one the six fighting Bakugan are captured leaving only Drago. In an effort to stop this, Drago is separated from the core of Vestroia by the six legendary warriors, and heads to Earth to seek out Dan Kuso, and the two leave for New Vestroia, with Marucho following after overhearing Drago's plan to leave the others behind. After they learn that the Vestals are responsible for the state New Vestroia has fallen into, he challenges Lync Volan and Volt Luster, two members of the Vexos. A Vestal named Mira, part of the Bakugan Brawlers Resistance, interrupts and tells Dan of the new brawling style required for Bakugan battles. Dan manages to adapt to the new method quickly and wins two Bakugan from Lync and Volt.

After the battle with Lync and Volt, Dan, Drago, and Marucho go with Mira to the Resistance base. Along the way, Mira reveals that only a few people of the Vestals realize that the Bakugan are intelligent creatures, while the rest of the people have not been told. She reveals that after discovering this for herself, and becoming outraged with her father for participating in the capturing of the Bakugan, she ran off and created the Bakugan Brawlers Resistance, joining with people who thought as she did. Upon arriving at the base, they meet Baron, a major fan of the Bakugan Battle Brawlers and the 6 hero bakugan. Shortly after, another Resistance Brawler named Ace, highly disapproves of Mira bringing humans to aid in their quest to free the Bakugan. Instead, he challenges Dan to a battle, and says that if he beats him, he and Marucho can join the Resistance in their quest to save the Bakugan. Dan gets off to a rocky start, but he and Ace are too evenly matched. With one win and one loss for each their battle ends in a tie and they become fast friends.

Now that Dan and Marucho are part of the Resistance, they gear up and get ready to fight back against the Vexos, first by heading for Alpha City and the Alpha dimension controller, the machines trapping bakugan in their ball form, to take it down. To get themselves ready, Dan offers to train Baron, whom gladly agrees and can't wait for the lessons to begin but is afraid what will happen when Dan finds out that he was the one who lost Tigrerra to Spectra. But after Lync and Volt were defeated, Spectra Phantom sends out Mylene Pharoah and Shadow Probe to ensure that the Resistance is taken care of. The next day, in the middle of his training, Baron reveals he is discouraged after losing Tigrerra to Spectra in a battle, and says he isn't worthy of the lessons. Just then Mylene and Shadow crash land and Shadow is forced to battle Baron. After losing before, Baron is discouraged and is afraid of losing Nemus the way he lost Tigrerra. But, on the brink of losing Nemus for good, Baron pulls through and wins back three of Shadow's bakugan.

Seeing how desperately he needs a partner to help Dan and the Resistance, Marucho takes his gear and heads out, in search of a Bakugan to battle with. At the same time, Mylene also goes hunting for Bakugan, after throwing away three she claimed useless. In the morning, Marucho meets Aquos Elfin, a Bakugan who turned out to know and have what might be a crush on Preyas. She explains that after his capture, she had to watch over the forest and protect the Bakugan living there from any harm. When Marucho asks to be partners with her, she at first declines because she claims to be "waiting for the right partner". But when Marucho explains that he needs her to help free the Bakugan (as this was what Preyas would have wanted) she says that if he passes her test, she will at least think about a "temporary partnership". As the testing goes underway, with Marucho not doing so well, Mylene flies over, and in fury, Elfin and Marucho demand she and the Vexos return the stolen Bakugan. Angered at how cruel Mylene is to the Bakugan she already carries (by throwing them away like trash), Marucho and Elfin challenge her to a brawl. But Mylene soon begins to show her skill, and may end up winning Elfin as a new Bakugan! just when all of mylene's bakugan were no use, she unleshed a bakugan called a bakugan trap. Just when Mylene is about to seize Elfin, a hooded figure wielding Ventus Bakugan arrives and saves Marucho. Mylene states she's tired of losing to this hooded person and offers him to join the Vexos, but he leaves without saying a word and Mylene departs. Meanwhile, Marucho slowly awakens, despaired that Elfin was gone. But as it turned out, Elfin was merely off to find him some water, and then begins explaining how she couldn't let anything happen to her "goofy partner". In the end, Elfin and Marucho are partners, able to aid the Resistance in their journey. Later, in episode 6, it is revealed that the hooded figure is Shun.

With the Vexos losing one by one, Gus Grav calls them all together to explain that the Resistance has to be defeated. So Gus decides to take matters in his own hands and confront the Resistance, and bring pride back to the Vexos. Meanwhile, the Resistance makes a stop en route to Alpha City, where Mira gives Dan a Bakugan Trap called Scorpion to help in his battles. Not much is known about the Trap Bakugan except that they are incapable or unwilling to communicate. Excited, Dan takes off to get in some training with Scorpion. Just then, Gus shows up and starts to mess with Dan's head, asking what he will gain from saving the Bakugan, leaving Dan with this question. He returns later, asking Dan what the answer is to his earlier question, and it is revealed that he is the number two brawler among the Vexos. Feeling confident, Dan decides to take him on, but is soon overwhelmed with the power of Gus' Bakugan Subterra Primo Vulcan.

When Prince Hydron is furious because of his incomplete collection, Spectra and Gus challenge Dan to a battle in an effort to catch Drago. While the Resistance plans to attack Alpha City, Mira wants to take a short detour to find her brother. It is hinted in this episode that Ace starts to like Mira, during in the arugment, he seems and sounds like that he was worried about her going somewhere that might be dangerous. In the midst of the argument, Dan sneaks away with Drago to fight Gus and manages to battle well until Spectra joins in and Dan starts to struggle in the fight. Out of nowhere, Shun comes to his rescue. Shun beats Gus and Dan beats Spectra when Drago displays a massive power surge due to Helios' taunts about Tigrerra. Seeing that huge amount of power Spectra shows hint of betrayal when he said that he won't let the magnificent Bakugan become a play thing, meaning that he won't give it to Prince Hydron if he captures it. Back at the base, Shun explains that while he was in the mountains a portal opened up right in front of him and got sucked through to New Vestroia. After he rescues Ingram from the Vestals, she remained in his debt and the two banded together to free the Bakugan. As they make their way closer to Alpha City and the dimension controller, Dan asks why Shun didn't reveal himself earlier when he rescued Marucho. Shun explains that he had something important to attend. When they approched Alpha City, Shun revealed he'd break in the city and find his Skyress.

It's an all new adventure for the Bakugan Battle Brawlers when Dan's family moves to Bayview City and Marucho's Bakugan Interspace becomes fully operational to everyone, allowing kids all over the world to log on and display their battling skills. Dan heads to a cafe in town where Julie works to meet with his new friend Jake, a young brawler who is new to the game. The two make there way to Bakugan Interspace where they meet up with Marucho who gives Jake Subterra Coredem. Dan and Jake immediately want to battle, but discover that all the available arenas are occupied. They eventually meet up with Ren and Shun, who is locked in battle with Shuji. With Shun quickly seizing victory, Ren is scheduled to battle Dan next. As the battle intensifies, Marucho is forced to shut down Bakugan Interspace and Dan is knocked out cold. Before coming to, Dan has a vision of Bakugan at war each other, something which everyone, except Ren, brushes off as a hallucination.

On the distant planet Gundalia, the Twelve Orders discuss the explosion caused by Ren and Dan's battle in Bakugan Interspace. Kazarina, the head of the Bakugan Biology Research lab, is unable to identify the strong powerful Bakugan that caused the explosion. So, Emperor Barodius orders that this bakugan be brought to them before it joins their enemy. Back on Earth, Jake and Julie still believe that what Dan saw was a dream, though he is still convinced that it was real. Just then, Marucho calls and everyone heads to Bakugan Interspace, where Ren confesses that he is a humanoid alien being from Gundalia looking for strong battlers to help fend of the invading Neathians. Though hesitant, the Brawlers accept and track down two moles identified by Ren, Sid Arcale and Lena Isis and a battle ensues. Though Sid and Lena gain the upperhand, Dan pulls through with Jetkor and wins the battle. Everyone congratulates Dan on the victory. However, there may be more to Ren than meets the eye.

As Ren identifies three more Neathian moles (Mason Brown, Jesse Glenn, and Zenet Surrow), Princess Fabia from Neathia arrives in Bakugan Interspace looking for the recipients of the message she sent. Dan, having slept in, rushes to Bakugan Interspace and runs into Fabia, literally. Fabia learns that he is the top brawler in Bakugan Interspace, but before she can ask about her message, Dan rushes off to meet his friends. He tells them about the girl and Ren suspects she may be a Neathian spy. Before they can track her, Fabia arrives and is shocked to find that Ren, a Gundalian has gained their trust first! Now that Dan has sided with the Gundalians, Fabia claims they are her enemy and a battle ensues between her and Dan. Dan quickly takes the lead but falters when Fabia summons Haos Aranaut, the original Aranaut from which the clone Aranaut, Coredom, Hawktor and Akwimos originated, meaning Fabia sent the Phantom Data. This also means that it came from their enemies, the Neathians, something that Shun is not so sure of anymore. Defeated, Fabia leaves and wonders what to do now that Dan has sided with the Gundalians. While the others congratulate Dan on his victory, Shun disappears to ask Fabia what her side of the story is.

Dan gives Jake a practice match, but Jake feels he is not ready to become an official Bakugan Battle Brawler. When another mole, Mason Brown, is located, Dan challenges him to a battle, but Jake steps in and wants to prove himself. Due to his inexperience, Jake quickly loses and feels he has failed Dan in proving himself. The next day, Jake is still upset over his loss, so Julie, being a Subterra master, offers to help him discover his own battling style. Jake returns for a rematch with Mason while being greeted by a bitter crowd. With his newfound confidence, Jake easily defeats Mason. Before the Brawlers can pursue Mason, he teleports out of the stadium. Dan congratulates Jake, who becomes an official Battle Brawler.

With the Neathian moles making themselves known, they begin kidnapping brawlers from Bakugan Interspace. The puzzling part is that each brawler is eventually returned to BI. Meanwhile, Sid and Zenet find their recruiting hard when Marucho puts out an announcement to everyone not to battle Sid, Lena, Mason, Jesse and Zenet. In retaliation, Sid and Zenet challenge Dan and Ren to a battle. Ren is quickly taken out, leaving Dan to fend for himself. Being outnumbered, Dan loses but Sid allows him to keep Drago. After the battle, Gill of the Twelve Orders orders Sid to not engage the brawlers and to leave it to Ren, who states their plan is working perfectly.

Fabia tells Shun her side of the story, which he believes while he worries that the others have made a big mistake. While Marucho and Ren work hard on an expansion for Bakugan Interspace Jesse Glenn arrives. Dan heads to the new arena to challenge him but is stopped by Fabia, who claims that Jesse is not who he claims to be. Fabia steps in to fight Jesse, something that greatly confuses Dan and the others since they all think that both Jessie and Fabia are Neathians. Ren insists that they do not cheer for either of them and they should just let their enemies destroy each other. Despite this, Dan, Jake and Marucho cheer for Fabia. Although she puts up a good fight, Fabia loses due to a bug in the field, causing her to cry over her loss. Shun explains that the only person who could plant an unlikely bug that caused Fabia's defeat was someone familiar with the BI System, someone like Ren. Ren denies everything while Jesse flees. Fabia and Shun expose Ren for lying about how Neathia attacked Gundalia, causing him to run away. Marucho, however, refuses to believe these accusations and rushed off to find Ren.

It has been one year since the events in Gundalia, and Bakugan Interspace has grown greatly. Marucho has teamed up with a Bakugan from Gundalia, Tristar, while Shun's partner is Taylean, a Bakugan from Neathia. After winning a battle, Dan and Drago learn that there have been two groups of battlers, Team Sellon and Team Anubias who have risen to high ranks not far behind Dan. Dan has a nightmare the following night in which a mysterious entity demands that Dan give him something. Drago, who also had a vision of a bakugan during the earlier battle, speculates that the two events may be related. Unconcerned by this deadly and skilled competition, Dan challenges Ben, a member of Team Anubias to a brawl. While Dan and Drago initially struggle due to the battle environment and faced against two bakugan. They struggle and just before they are about to lose, the entity again appears to Dan (Drago sees the image of the bakugan) and tells him to release his hidden power and destroy ben and his bakugan, also giving him all the power. They ultimately pull out a win after realeasing that power. However, Drago is unable to control the power nearly destroying the arena. This leaves Dan and Drago to wonder about the dangers of this latest discovery and if they are a threat.

After Dan's battle with Ben, Marucho and Shun talk to Dan about having Drago sit out for a while. Dan, however, shrugs it off and says he'll get Drago's powers under control, but secretly, he's extremely nervous about the amount of power Drago unleashed, and the two of them decide to go train to get it under control. Meanwhile, Marucho decides to have a battle to make up for Dan having to sit out, so he fights against Jack of Team Anubias. He and Tristar struggle to win against Jack and his Guardian Bakugan, Aquos Krakenoid. Meanwhile, Dan and Drago locate an abandoned arena to use as a training ground, but shortly after, a mysterious Mechtogan that calls himself Zenthon appears and wreaks havoc on the arena. Dan and Drago try to defeat it, but it eventually flies away and reappears to interfere with Marucho and Jack's battle and devastating the arena. Anubias and Sellon team up to fight Zenthon but struggle to defeat it, not even managing to land a hit. Eventually, however, Zenthon flies off and Anubias and Sellon part ways. Marucho and Shun then speculate that, since Zenthon has the same destructive power as Drago, they may be connected. Meanwhile, the masked man, whose named is officially revealed to be Mag Mel, is trying to break free of his prison, but requires more energy from Dan and Drago to do so. One of his hooded servants (who looks a lot like Sellon) informs him of the Mechtogan attack. He is astounded that Drago has that sort of power and tries to absorb more energy from his Darkas Dragonoid (or possibly Dragon and Dan) and begins to break free.

After Dan refuses to sign a few autographs and say hello to his fans, Anubias challenges the "big shot" to a brawl and Dan accepts the challenge. Both win one round because Drago tries too hard to control his powers and didn't focus on the battle. Dan is afraid of another power overload, so he tells Drago to run and not to fight. Anubias uses the opportunity to strike Drago and wins the brawl. Upset by the loss, Noah, one of Dan's biggest fans who had stood up for him earlier, becomes one of Anubias' fans. After the brawl Anubias tells Dan that he is disappointed that Dan brawled like an amateur, but still saying that he has respect for him.

Shun and Marucho find Dan and Drago training secretly and they discover that the Mechtogan Zenthon originally came from Drago. The next day Sellon and Dan have a match, but Shun and Kris from Sellon's team battle alongside making it a tag-team battle. Drago has a lot of difficulties controlling his powers and almost releases Zenthon, but Shun prevents this from happening by syphoning off Drago's excess power. Dan and Shun manage to pull out a win, but Sellon throws the battle and wins over the audience. Shun confronts her as to why she let them win to which Sellon offers Shun to join her team which he declines.

Tension between the Brawlers rises when Shun suggests that Dan take a break from battling as to avoid another of Drago's power overloads. However, Dan interprets this as Shun not trusting him and they have a fight. Shun is later confronted by Sellon, who still wants him on her team, and suggests that he give Dan some tough love. Later, the Brawlers are challenged by two boys calling themselves the Tri-Twisters. Shun and Marucho decide to take it themselves without telling Dan but have trouble against the opponents. Dan discovers this and wants to help, but begins to realize that Shun may have had a point earlier. They then discover that there is a third Bakugan, previously attacking invisibly, present. Sellon and Anubias suddenly interrupt the battle, wanting to teach the boys a lesson in honor and easily defeat them.

Dan still refuses to listen to Shun and Marucho when they tell him to take a break from battling. Even though he is still plagued by nightmares about Mag Mel and Razenoid, Dan doesn't mind battling Anubias with the winner being crowned the official number one brawler of Bakugan Interspace. Shun and Marucho tell Dan that they still think he should not fight, but will support him anyway. Dan thanks them and promises to reveal everything after the battle. During the fight, a vision of Mag Mel and Razenoid appear and Dan and Drago think they are fighting them instead of Anubias, causing them to lay waste to the field and endanger the crowd. To make matters worse, Zenthon reappears and everyone learns that Drago created him. Once Zenthon leaves, Dan and Drago's vision are returned to normal. The battle is declared over and Dan is disqualified for illegally using Zenthon (even though it was unintentional) and Anubias is crowned number one of Bakugan Interspace. Unable to face his fans who have turned against him, let alone his friends, Dan packs up his things and leaves.