Season 4

Dan and the gang have set up a new arena - but a mysterious brawler from Team Anubias arrives to challenge Dan for the leaderboard.

Dan denies there's a problem with Drago and in private he takes him to an abandoned arena to practise. However, a powerful Bakugan appears from nowhere to battle.

Dan is struggling to comprehend that Code Eve is the source of Drago's evil power. He then gets drawn into an argument with Annubius and agrees to a match.

Dan's mum tells Shun and Marucho that he's been having nightmares, they follow Dan to find out that he's been training Drago in secret.

The team ask Dan to take a break from battling until he can learn to harness Drago's new powers. However, life without Dan is harder than they thought.

Dan is haunted by strange dreams as he attempts to get back to battling and harness Drago's powers yet his new abilities once again prove too powerful for him.

The newly discovered Bako-Nanos allow the brawlers to engage in more extreme battling. Meanwhile, the Bash Bros take the tournament by storm.

Dan and Drago return to new Vestroia to train. They run into Prayus and his new student Amazon, however, even in practise Drago cannot control his powers.

Anubias is sent to New Vestroia to battle Dan and Drago. Preyas steps in, but Anubias summons his own Mechtogan.

Rafe and Paige learned that the Mechtogans appears when there is a lack of sync between a brawler and their Bakugan. Meanwhile, Marucho's father asks him to quit.

Drago struggles to gain control of Zenthon and worries that it is because he and Dan are out of sync; Paige and Rafe worry that the Brawlers are slipping.

Wyvern takes Dan and Drago on a journey into the center of their minds to try and solve the identity of the mysterious man haunting their visions.

In order to save Drago's powers, Dan and Drago have to go back through their own memories to find Code Eve, the mother of all Bakugan.

The Brawlers face Team Anubias in the next round and Dan and Drago have to summon a Mechtogan Titanin order to defeat Sellon's triple Mechtogan assault.

With the Chaos Bakugan on a deadly rampage, the Bakugan Battle Brawlers must try to save the day by summoning their Bakugan to do battle.

Dan Kuso expected a Hero's welcome on his return, but he soon finds that people are still angry at him for leaving.

The Battle Brawlers go to Paige's home and find a devastated city, discovering later that the evil Mag Mel and the brutish Razenoid are behind it all.

The Gundalian soldiers try to get revenge on the Chaos Bakugan but Anubias and Sellon's powerful bakugans, Aquos-Darkus and Pyrus-Darkus, soon arrive.

Nurzak warns the others that the Chaos Bakugan's next target will be Neathia - if they are able to take Gundalia down.

After the Gundalias battle, Mag Mel desires Dan's key even more so he sends Anubias and Sellon to get it, but they also aspire to destroy Dan on.

Spyron hunts Sellon down but Chris and Soon save her and take her with them to the repaired access point, but will she help or just cause trouble?

Dan and Shun are defending Bakugan Interspace when they discover Mag Mel has both the gate and the key, meaning his resurrection is not far away.

Stuck in Interspace, battling off the Chaos Bakugan, Dan has a vision that Mag Mel plans to attack the Earth but will he be successful?

Marucho explains the plan to prevent Mag Mel from getting to Earth but, before that, they must split into two groups.

Mag Mel tortures all the humans by putting them into the dark reverse dimension of the Earth while the Dark Moon sends Razen Titans to blow the Earth up.

The battle continues between Dan and Mag Mel and, with the team fighting Bakugan, Mechtogan and Mechtogan Titans on Earth, will this be the end of it all?

A long time has passed since Mag Mel and Razenoid's defeat. Earth, New Vestroia, Vestal, and Neathia have been emptied of all the Chaos Bakugan. Everyone has returned home, including Spectra, Gus, Paige, Rafe, Taylean, and Trister.

The Brawlers learn that the leader of the Mechtogan's and Nonet Bakugan is a battler called Wiseman.

Dan, Drago, and Reptak ask the people of Bakugan City if they have seen Gunz, but no one has. Then Reptak, Gunz's former Bakugan partner, hears Gunz's voice and joins Dan and Drago in the battle against Wiseman.

After Shun and Jaakor train together, Shun takes off but Orbeum and Skytruss appear and ask Jaakor to go with them to New Vestroia to protect the Bakugan. Meanwhile, Shun is confronted by Wiseman and his Bakugan Spatterix and Stronk.

Dan, Drago, and Reptak ask the people of Bakugan City if they have seen Gunz, but no one has. Then Reptak, Gunz's former Bakugan partner, hears Gunz's voice and joins Dan and Drago in the battle against Wiseman.

A friend from the past comes to help the Brawlers in a battle with Wiseman and his Mechtogan.

Wiseman reappears and attacks the amusement park that Bakugan helped create Bakugan Land. Julie decides to go and confront him as a reporter to see what his problem is, and the Battle Brawlers must try and find a way to contain the Nomads powers once again.

Gunz suddenly appears after a long absence. Dan is suspicious that Gunz and Wiseman are one in the same.

Now that Wiseman has stolen several of their Battle Suits, the Brawlers lure Wiseman into a battle in attempt to take them back.

The Brawlers go on the hunt to track down any clues that might lead them to Wiseman's hideout in an effort to trap him there.

It's a race against time as the Brawlers once again battle Mechtavius Destroyer, but this time they are missing a crucial member.

Runo meets a new Bakugan named Aerogan, who asks to be her partner. Aerogan must prove himself against Wiseman and his henchmen.

When the Brawlers are finally able to infiltrate Wiseman's stronghold, they are drawn into a vicious battle.

Gunz discovers that Wiseman has morphed and taken on his features! Wiseman finally reveals his dark secret.

Coredegon and his Mechtogan brothers combine to make Mechtavius Destroyer, a powerful mega-Mechtogan who wants to conquer the earth and universe.

The Brawlers are trapped in the Doom Dimension by Mechtogan Mechtavius Destroyer. Meanwhile, The Nonet Bakugan take on Mechtavius Destroyer.

Mechtavius Destroyer wreaks havoc in Bakugan City. The Brawlers, still trapped in the Doom Dimension, battle Gunz and Betadron.

After attacking Bakugan City, Mechtavius Destroyer invades New Vestroia. The Bakugan put up a brave fight but are no match for his strength.

The Brawlers travel back in time with the help of Professor Worton in an attempt to undo the destruction caused by Mechtavius Destroyer.

As the Brawlers face off against Mechtavius Destroyer in the battle to end all battles, Dragonoid Destroyer pulls a surprise maneuver.