Daniel Kuso known in Japanese versions as Danma "Dan" Kūsō (空操 弾馬 Kūsō Danma?, Dan ダン), is the human main protagonist in the series. Dan is an impulsive 12-year-old boy who, after creating the rules for Bakugan, wants to be the number one Battle Brawler. However, after teaming up with a Pyrus Dragonoid named Drago, Dan starts to realize there are more important things. He is 12 years old in the first season, 15 in New Vestroia, 16 in Gundalian Invaders, and 17 in Mechtanium Surge. In the beginning he is ranked #121, and by episode 39, he is ranked #1, and has become ranked #4 or under in episode 6 of Mechtanium Surge.
In New Vestroia, Dan returns to New Vestroia to help Drago save the world from the invading Vestals. Despite having just been introduced to the new Brawling system, Dan manages to get the hang of it before he battles his way into the Resistance by tying with Ace. He returns to Earth, following Spectra, Gus, and Lync into a portal with Mira and Baron. After losing Drago to Spectra in episode 16, his determination to get him back pays off as he and Drago reunite in episode 18. At the end of episode 19, he and Baron go back to New Vestroia through Dr. Gehabich's dimension transporter. In episode 20 he and Baron make it back to New Vestroia where they battle Mylene and Shadow in Beta City where they defeat them when Drago unleashes the power of the Perfect Core. In episode 26, he goes back to Earth, along with Marucho, Shun and the rest of the Bakugan. Various portals open up across the world, allowing all the other brawlers to reunite with their Bakugan.
Dragonoid he Bakugan main protagonist in the series, and also Dan's partner who resembles a dragon. Drago is the leader of the Bakugan with strong convictions and morals, and is one of the most powerful species living in Vestroia. Together with Dan, they set out to defeat the Doom Beings, and rebuild the Perfect Core of Vestroia. He has the ability to radiate intense heat in battle dissolving everything around him. He is equipped with high intelligence. He is limited in battle mobility, but compensates for it through powerful strikes. He is able to infinitely evolve on his own and with every evolution it makes him stronger and it brings him one step closer to the Perfect Core.
Shun Kazami (風見 駿(シュン) Kazami Shun?) was the former 1st ranked Bakugan brawler but after Masquerade showed up, he moves down to 6th, then back up to 5th after defeating Komba, then 2nd and ultimately to 3rd by the end of the first series. He is 13 years old, has black hair, which is tied into a long ponytail, and wears a purple jacket. He is a master of Bakugan and co-created the rules with Dan. He is also Dan's childhood best friend. Shun is a loner, a boy of very few words, but yet is willing to help his friends at almost every turn. He is a Ventus brawler and he approaches Bakugan like a ninja. He lives with his grandfather, who used to be a famous ninja warrior, who once expected Shun to follow in his footsteps instead of playing Bakugan. His Guardian Bakugan is a Ventus Skyress, whom Shun received from his sick mother. It is unknown if Shun has a father, this is not yet revealed, he has not appeared in any of the seasons. Skyress later evolved into Storm Skyress.
Choji "Marucho" Marukura (丸蔵 兆治 Marukura Chōji?, マルチョ Marucho) - He loves to play Bakugan and is fonder of creating strategies rather than just using brute force. He used to be very obedient to his parents just because he wanted to please them, but that changed when he met the Brawlers and Preyas. He now has no regrets for the past, realizing that he only wanted to make his parents happy. He is an Aquos battler. His guardian Bakugan is his Aquos Preyas, which, later in the series, is revealed to have a special evolution, allowing him to burp up his two twin brothers, Preyas Angelo, who resembles an angel, and his brother, Preyas Diablo, who resembles a devil, and this allowed Marucho to not only keep Preyas in his original form, but his 'brothers' as well. Preyas was sent to the Doom Dimension in Marucho's battle with Klaus Von Hertzon. Later, Klaus showed up with Preyas. Dan and Runo found a way to get Preyas back through defeating him in battle. After this incident, Preyas burps up his brothers. Preyas also has an effect called "Change of Attribute", with which he can take advantage of the opponent's gate card. Preyas II has a split personality: Angelo Preyas is a bit more intelligent and nice compared to Diablo, who usually says exactly what Angelo says, but in a different way. He reached 7th in the
Runo Misaki (美咲 琉乃(ルノ), Misaki Runo?) is a 12-year-old tomboy who loves playing Bakugan against skilled people so she can show off. Runo is a Haos brawler. Her Guardian Bakugan is a Haos Tigrerra (the others being Terrowclaw and Saurus), who is very obedient and powerful in battle. Tigrerra later evolves into Haos Blade Tigrerra.Though underage (in the first season), she helps her parents run their family business in a cafe. Alice also works there. Runo is a bit jealous of Alice because she attracts a lot of the guys at the cafe, which draws attention away from her. In one episode, Alice was not working at the cafe, and the customers were so rude and ignorant, they called out to Runo remarks like, "Where's Alice?!", and, "We want Alice!!", but she just brushed it off and yelled back at the customers, showing her rather impatient and strong attitude. It is revealed in episode 32 that she knew Dan from when she was little, but didn't realize it because she didn't catch his name. She reached 6th in the rankings. She has not brawled for the final showdown against King Zenoheld as Tigrerra chose not to brawl and put her into trouble. She missed her friends so much that she teleported herself to new vestroia but she was half way there. She's believed to be 16 years old in the third season's timeline. Even though she didn't appear in Gundalian Invaders as an individual, in True Colors, she was shown in a flashback from New Vestroia, and in Mobile Assault, she was shown in a picture with Dan and Julie. In Mechtanium Surge, she was shown in another picture with Julie in the episode Back in Sync. However, she finally made her return in the episode Enemy Allies, where she delivers the battle suits to Dan, Marucho, and Shun as they battle Wiseman. From that episode on, she and Mira helped to deliver the Battle Suits to the Brawlers whenever they needed them. In Jump to Victory, she met a Baku Sky Raider named "Haos Aerogan" and became his new partner, but Aerogan later returned to New Vestroia.
Julie MakimotoJulie Heyward (ジュリー・ヘイワード Jurī Heiwādo?) in Japan, is a 12 year old girl from Australia who tries to stay happy even when the worst has happened (for example, when Billy ended up under the control of Masquerade); she acts happy after something bad happened but she generally does that just to cover up her true feelings. Julie forgets things easily, proving that she is a little scatterbrained at times. In the Japanese version, Julie spices her speech with American phrases, differentiating her personality from the others. She is a Subterra battler and her guardian Bakugan is her Subterra Gorem. Gorem then evolves into Subterra Hammer Gorem. Julie has a sister named Daisy who has bested her in everything since she was a child. She reached 8th in the rankings. She chose not to brawl against Zenoheld in the final showdown as Gorem did not want to put her into trouble. She returns in Gundalian Invaders as a neighbor of Dan's once he moves. She works at a cafe and in Revelation, it is revealed she is a cheerleader for the team Jake plays for. This strongly suggests she is already in high school in her first year with Dan. She's believed to be about 16 years old. In Brawler To Be, Jake is having his first battle and Jake gets scared, so Julie teaches Jake some lessons. Her role is basically that of a supporting character. Julie returns in Mechtanium Surge as a news reporter.
Alice Gehabich (アリス・ゲーハビッチ Arisu Gēhabicchi?) is a 13-year-old girl from Moscow, Russia. Although she knows almost everything about the game, she rarely plays it. She usually just gives advice to the other brawlers, which she prefers over battling. Alice is kind and caring worried for others and does not think of herself. Alice was sometimes unconsciously possessed by "Masquerade" (her mysterious alter-ego), and with a sudden jolt, her hair rises up and turns blonde, and clothes and a mask come out of nowhere on her, and finally, she turns into a male. This was caused by her exposure to the Silent Core. Alice might seem to be less important than the other brawlers, but in fact she plays an important part, not as Masquerade, but without her, the brawlers might have already lost to her alter ego. Michael Gehabich is her grandfather; who she constantly worries about after finding out that Hal-G is his alter-ego and that he works for Naga. Alice and Marucho are the 2 brawlers who mostly use strategy. However, unlike Marucho, Alice gives her strategies to the other brawlers. She left the Brawlers after finding out that she was Masquerade out of intense guilt over what she had done as him, but later returns in time to save Dan. Her guardian is Alpha Hydranoid, which she received from Masquerade after he left her body (something she initially resents, because she believed that she needed him). Alice is 16 years old in New Vestroia, 17 years old in Gundalian Invaders, and 18 years old in Mechtanium Surge. Alice has a special ability that most brawlers wish to have, she can see the power level of any bakugan on the field even if the bakugan is not playing! Which is why she does not have a baku-pod. She might have this ability because of Masquerade. She ultimately ends up at 2nd place at the end of the series. It is still unknown if Alice is an orphan. She appears in Surprise Visitor and takes in Lync in Gate Crashers. In New Vestroia it is stated after Alice is reunited with Hydranoid, that she hates brawling because of what happened in the past but when Shadow attacks in Shadow Attack, she has no choice but to fight back. She and her grandfather also manage to find the route to the Mother Palace in All For One.
Joseph "Joe" Brown, Osamu Jō (城 治 Jō Osamu?, nicknamed Joe (ジョウ Jō?)) in Japan, is also known as Webmaster Joe (ウェブマスター・ジョウ Uebumasutā Jō?). In the first season, it was revealed that due to an unknown health condition, he basically lived in a hospital for some time. During this time, the Brawlers thought that he was working for Masquerade. After Dan confronted him, he told Dan that he would only tell him the truth if Dan could beat him in a battle. In the middle of the battle, Joe fainted, and when he awoke he revealed that the brawlers' theory was untrue and he actually sent a message to all of the Bakugan players around the world to warn them that Masquerade was plotting against them. After the truth was revealed, they asked him if he wanted to become a Battle Brawler, which he gladly accepted. He then revealed that he and his mother were going on a road trip for the time being, to see the world outside of the hospital. Sometime later, after he moved to the Brawlers' neighborhood, he found Wavern, who had the Infinity Core hidden inside of her. It was also revealed that Wavern was Naga's twin sister and that he was looking for her in order to absorb the infinity core. Joe was the first person to beat Masquerade at Bakugan, after he obtained Wavern.
Jacob "Jake" Vallory is a new friend of Dan's after his arrival at his new town. He has a powerful presence, because he's big for his age. He's very calm, but can get overly excited and obsessive. He is a Subterra brawler and his Bakugan partner is Coredem. He is just starting out as a brawler and still was asked to join the Bakugan Battle Brawlers. He really admires Dan and likes to use his name and rhymes it with other words like, " Dan the Man with a pink/brown van." which sometimes irritates Dan. Later on when the brawlers are on Neathia Jake gets kidnapped and brainwashed but as of episodes 34 it looks like Jake is coming back to his senses. But in Dream Escape he has a dream where Dan is shouting his name and it is then that he comes back to his senses and goes back to Neathia with the others[1]
Gunz Lazar is a new character and the new member of the Battle Brawlers in Arc 2 of Mechtanium Surge. Gunz has blond hair, wears a gray, with red lining, jumpsuit. His eyes are violet. He thinks of himself as Dan's greatest opponent, and has a somewhat cocky personality. He is a Haos brawler and his partner is Reptak. He was seen in Evil Arrival which he fought in the Neo Tournament in Bakugan City. However, he was lost since Wiseman Cometh. In Battle Suit Bash, he was revealed that he was captured by Wiseman and that he was absorbing Gunz`s energy as well as stealing his appearance using vines. He later freed himself in Enemy Infiltration. He later took on the Wiseman persona himself after Coredegon stopped using the persona, becoming a second Wiseman and vowing vengeance against Dan for turning Reptak against him. He abandoned the persona in Doom Dimension Throwdown, joing the Brawlers and reuniting himself with Reptak.