Seasons & episodes
S4 · E1Interspace Showdown 2011-02-13 · 25 min
Dan and the gang have set up a new arena - but a mysterious brawler from Team Anubias arrives to challenge Dan for the leaderboard.
S4 · E2Mechtogan Mayhem 2011-02-20 · 25 min
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.
S4 · E3Disconnect 2011-02-27 · 25 min
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.
S4 · E4Fall From Grace 2011-03-06 · 25 min
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.
S4 · E5Tri-Twister Take Down 2011-03-13 · 25 min
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.
S4 · E6Agony of Defeat 2011-03-20 · 25 min
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.
S4 · E7BakuNano Explosion 2011-03-27 · 25 min
The newly discovered Bako-Nanos allow the brawlers to engage in more extreme battling. Meanwhile, the Bash Bros take the tournament by storm.
S4 · E8Return to New Vestroia 2011-04-03 · 25 min
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.
S4 · E9Chaos Control 2011-04-10 · 25 min
Anubias is sent to New Vestroia to battle Dan and Drago. Preyas steps in, but Anubias summons his own Mechtogan.
S4 · E10A Royale Pain 2011-04-17 · 25 min
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.
S4 · E11Back in Sync 2011-05-01 · 25 min
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.
S4 · E12Mind Search 2011-05-08 · 25 min
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.
S4 · E13Re-Connection 2011-05-15 · 25 min
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.
S4 · E14Triple Threat 2011-05-22 · 25 min
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.
S4 · E15Interspace Under Siege 2011-05-29 · 25 min
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.
S4 · E16A Hero Returns 2011-06-05 · 25 min
Dan Kuso expected a Hero's welcome on his return, but he soon finds that people are still angry at him for leaving.
S4 · E17Gundalia Under Fire 2011-06-12 · 25 min
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.
S4 · E18Battle Lines 2011-06-19 · 25 min
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.
S4 · E19Unlocking the Gate 2011-06-26 · 25 min
Nurzak warns the others that the Chaos Bakugan's next target will be Neathia - if they are able to take Gundalia down.
S4 · E20True Colours 2011-07-03 · 25 min
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.
S4 · E21Dangerous Beauty 2011-07-10 · 25 min
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?
S4 · E22Unfinished Business 2011-07-17 · 25 min
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.
S4 · E23Behind the Mask 2011-07-24 · 25 min
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?
S4 · E24Interspace Armageddon 2011-07-31 · 25 min
Marucho explains the plan to prevent Mag Mel from getting to Earth but, before that, they must split into two groups.