Errors and Questions in Bakugan Anime

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Bakugan Battle Brawlers

In multiple episodes, the characters accidentally call Gate Cards "Ability Cards" and vice versa. Furthermore, the characters call certain Bakugan by the wrong name.
Dan says he and Shun invented the rules of the game, but there were many things he didn't know. It could be that he and Shun made the basic rules, and other people assisted in the more complicated rules, but there is nothing to support this.
Sometimes the writers would forget that they changed the names of the attributes and characters, and still refer to them by the original Japanese names. Speaking of which, quite a few mentions of the word "Nova" were changed to "Pyrus" when they didn't need to be. Such as "Mega Dimensional Nova", "Supernova" and "Shining Nova"
In BAKUGAN THE BATTLE BEGINS, Dan says, "Ooh, my Saurus," when he was holding a Serpenoid.
- Shuji's Subterra Mantris' front arms in ball form are backward.
- Shuji holds a Darkus Stinglash with the skin of a Darkus Juggernoid.
- Dan is seen with Drago before the conclusion of the second battle with Shuji.
Also, Dan not knowing what Subterra is makes absolutely no sense. The two points being he made the game with Shun, and Akira is a Subterra Brawler, whom he fought before.
In A Feud Between Friends, Dan refers to Drago as "Pyrus" when he took out Drago's character card. And Rikimaru says "It was the Pyrus..." and he should have said "It was the Gate Card..."
In Runo Rules, upon remembering that Dan said he liked loin tips, Runo said, "Oh great. I will probably run into Dan there". However, after Dan and Runo did bump into each other, Runo asked Dan if he lived around there. Dan also said, "So, we finally meet." It was later revealed that they knew each other since childhood. (This is not the case in the Japanese version, as Dan and Runo only merely do not realize that they live in the same town).
- The Bakugan in Runo's hand that she called Saurus is a Juggernoid in the English version, but was corrected in the Japanese version.
- There was also a coloring mistake on Runo earlier in the episode.
- Runo, Tigrerra and the Bakupod refer to Tatsuya's Fear Ripper as a Gargonoid.
In A Combination Battle, the Bakupod refers to Robotallion as Centipoid.
Every time Drago uses D-Strike Attack, his eye horns are gold instead of red.
Sometimes Delta, Ultimate, and Infinity Dragonoid's eye horns are gold instead of red.
In Fight or Flight, Tigrerra says "The Combination of Darkus and Haos is a powerful force indeed," when she should have said Darkus and Aquos.
In Grandpa's Got a Brand New Bakugan, Runo tells Marucho to keep Shun's Skyress busy against Preyas, but Preyas was battling Falconeer.
In Duel in the Desert, when Komba appears with Billy in front of the Brawlers after becoming one of Masquerade's henchmen, Julie points out that Komba is one of her neighbors. Later, however, when Komba becomes Shun's "first student" and betrays Masquerade, they take him back home, but they take him to Africa. Komba could've moved.
- Julie says, "...my Bakugan can battle against you even if you don't open your Gate Card," when she should have said, "...even if he's not on your Gate Card."
- Dan also says, "That kid's Bakugan has just landed on your Tuskor's Gate Card" to Julie when it was Komba's.
In Evolution Revolution, when Masquerade is confronting Marucho and Runo, Marucho blames him for the fact that Preyas got sent to the Doom Dimension when he lost Preyas to Klaus. Although he could have thought that Masquerade told Klaus to battle them.
In Julie Plays "Hard Brawl" Dan says to Masquerade, "I've never seen this poser in battle!", but Dan already battled Masquerade in Masquerade Ball and Just For The Shun Of It.
In A Little Help from my Friends, Drago's head was yellow for one second.
In Drago's On Fire, when Drago and Manion are facing off, the Bakupod does not add the power the Gate Card gave to either of the Bakugan.
In Say It Ain't So Joe, when the brawlers were waiting for Dan, Julie says "Where is that Drago hiding?" when she should have said "Where is that Dan hiding?"
In Trust Me, when Julie opens the field to battle Shun, the attributes on her card are backward.
- When the Bakupod shows the combined G-power, there is a miss calculation of Centipoid and Gargonoid's mixed power level. It shows 380 when it is supposed to be 680.
- Dan notes that he's never seen the Triple Node used before, but he used it alongside Runo and Marucho (though he was probably referring to the Triple Node that consists of Ventus, Darkus, and Subterra when he said that).
In Doom Dimension or Bust, the Bakupod refers to Laserman as "Hydranoid" once. Also, Destruction Buster is mistranslated as "Distraction Buster."
In Nightmare in Doomsville, Illusion Daisy referred to Wormquake as "Rattleoid" once.
In their first appearances, Exedra and Frosch have their attribute symbols on their Ball Form.
In I am Marucho, Hear Me Roar, the translators forgot to change the word Nova to Pyrus.
In Play Nice Runo, Runo says she's never seen a power level that high (1520 GS). But she saw a power level that was over 2000 when combined with Tigrerra, Preyas and Drago.
In Home Sweet Home, Tuskor is seen in Runo's basket even though she used it in her battle against Lars Lion. Although, she could have had a second one just like Akira has two Centipoid.
In Dan's Last Stand, when Dan activated a standard Pyrus Gate Card and Drago's power level increased by 50 Gs, Diablo's power level doesn't rise as well despite being half Pyrus.
In Alice Gets Schooled, when Klaus activates Triple Battle, and he throws Siege, Siege was holding a lance similar to an Aquos Siege, but its attribute was Pyrus.
In The Race to Vestroia, when Dan says, "We will play next time we pass through," Dan's eyes were changed to dark blue.
In Ground Control to Major Dan, Drago's wings were closed, but the accessible version of Drago's wings was on his back.
In Here's Mud In Your Eye, Julie says to Billy "The only time you can beat me is in your dreams," but Billy beat Julie in a battle twice on-screen. Also, Nene says that she has the power of Darkus on her side when she should have said Ventus.
In The Final Brawl, When Infinity Dragonoid uses Aero Dragon, Shun said he used an ultimate Darkus ability when it was a Ventus ability.

Bakugan Battle Brawlers: New Vestroia

General

Beginning in New Vestroia, the rules of the game no longer apply.
- "How did the Vestals invent the same rules that the humans did?" is a common question by fans. The truth is that the rules are not the same, as with humans to win, one must "capture" three gate cards by simply winning battles. However, the Vestals have a life point system; the points base level was 500 and would decrease based on the G-power difference. (Let [winning g power =a], [losing Bakugan's G-power=b], [current life points=c] and [new life point value=d] then c-(a-b)=d) also, the Vestals have no Bakugan number limit while the human's limit is three.
- However, it can be noted that because the Vestals were aware of the humans, especially the Bakugan Battle Brawlers, they may have learned some of the rules from the Bakugan they captured.
The whereabouts of the Vexos who disappeared into the Death Bomb was never confirmed, but Hydron said it would send them to the far reaches of the dimension. However, they are presumed deceased since Hydron says, "Volt, Lync, I'll be there... soon" seconds before the Alternative exploded. This could also mean that Hydron threw a Death Bomb unseen and was swallowed up by it.
Many characters say "Gate Card open" when setting a Gate card
Ventus Ingram's voice is very feminine before his evolution, although he is confirmed to be male. His voice then mysteriously changes once he becomes Master Ingram.
It remains unclear why Angelo/Diablo didn't physically appear at all or was mentioned by Preyas or Marucho.
- In the picture album of Marucho's picture, Angelo/Diablo Preyas is missing when he was present at that time when the pictures were taken as a final moment back then. It was possible the animators or writers might have forgotten this since he wasn't mentioned at all being captured or seen in Season 2 throughout its run.
There is no explanation as to why Preyas, Gorem, and Tigrerra's power increased to 500 Gs without evolving while Hydranoid power decreased to 500 Gs. Skyress was the only one who kept her correct power level.
The Vexos said they needed the code that the Brawlers had to complete the Alternative, but they finished it without the code. It is presumed they got the code somehow off-screen, but it is never shown how.
The newer Mechanical Bakugan seem to have artificial intelligence as though they had feelings. Aluze and Boriates react to being attacked, implying they have pain receptors, and Dryoid could understand everything Hydron said.
The rule of capturing an opponent's Bakugan with a win of 500 points or higher was not enforced for most of New Vestroia but was brought back in episodes 8, 11, and 26 of Gundalian Invaders. It has not been applied since, likely because the anime stopped keeping track of the Bakugan G-Power.
- In the second half of New Vestroia, this rule seems not to exist anymore; when the Vexos' Mechanical Bakugan are all defeated for good (aside from Zenoheld, Hydron, and Volt), they were destroyed and not taken away. For example, in An Heir To Spare, Zenoheld defeated Hydron with such as massive G-Power difference, with Assail Farbros having 5000 Gs, and Dryoid being defeated with 800 Gs. In the end, Dryoid wasn't destroyed. It might be because Zenoheld showed favoritism with Hydron, and Clay gave him a more advanced mechanical Bakugan that can withstand that power.

Episode-Specific

In Get Psyched, when Marucho asked if Mira had any Bakugan for him, she says that she is out of Pyrus Bakugan, and then Dan promises Marucho he would get those Pyrus Bakugan back. This makes no sense, as Marucho is an Aquos Brawler. In the Japanese dub, they say "Aqua," which is correct.
In Marucho's Mission, Marucho's glove disappears when him and Mylene activate their gauntlets.
In Return of a Friend, Gus activates the Gate Card Subterra Reactor by saying, "Ability activate, Subterra Reactor."
- Gus should not have lost the last of his life gauge (30%, or 150 points), as he had thrown out Premo Vulcan (Power Level: 500), Heavy Aegis increased it by 200 (Vulcan: 700 Gs). Ingram's base power level is 400 Gs, and Wind Power, Soaring Strike Shot transfers 200 G's (Ingram: 400 - 600; Vulcan 700 - 500). Thus, when Ingram knocked him out, Gus should've had 50 points remaining (10%).
In Freedom Run, Volt says, "Double Ability activate, Ghost Cell," but he only used one ability.
In Gate Crashers, when Wired used Shower Harpoon, the Gauntlet said Altair's power went up, instead of Wired's.
- When Piercian uses an ability, it shows that Meta Altair was losing half of its G Power to become 750 Gs. Still, when Mega Nemus uses an ability afterward, Meta Altair's loses 750 Gs, only to remain with 750 Gs. (It does not occur in the Japanese version, as Meta Altair in that version only loses 250 Gs due to Soliton Defender's halving effect).
In Unmasked, Baron's pupils were black in one scene. It also remains unclear why Brandon and his friends look exactly the same after 3 years.
In Voices in the Night, Mylene summoned Elico as Darkus Elico without its changing attribute; furthermore, Elico can only become Aquos, Haos, and Subterra.
- During Ace's flashback of when he first met Mira, Mira is shown giving him a gauntlet, yet it was revealed that Ace used to be one of the best non-Vexos brawlers around; therefore, the fact that Ace didn't own a gauntlet before he joined the Resistance makes no sense. Although he may have had a lower quality Gauntlet, and Mira was giving him a better one.
In Last One Standing, Shun tells Ingram that he "lost Skyress in a brawl like this." As Shun was the first of the Battle Brawlers to come to New Vestroia, this hints that Storm Skyress brought him there and partnered with him against the Vestals, but they were defeated, and Skyress was captured. This may be why Shun was so eager to save Skyress, as he did not join the Resistance when he saw Marucho first.
- For whatever reason, Shun thought Shadow's Mechanical Hydranoid was the real Hydranoid, even after Shadow kept referring to Hydranoid as "Mechanical Hydranoid."
- In the same episode, Professor Clay says that Hades has none of the weaknesses of Altair, yet it's later revealed that Hades still has a lot of Altair's flaws, such as not being able to keep track of multiple opponents at once.
- Shun says Gate card rather than gate card set at the start of the second round.
In Dude, Where's My Bakugan?, Spectra calls Helios "Haos Helios".
- In the same episode after Apollonir defeated Viper Helios and Metalfencer Spectra says "I never lose" even though him and Gus lost to Dan and Shun during Return of a friend. It could be argued that Spectra didn't battle as hard as he could seeing as he mainly fought Dan to test out Drago's powers and thus did not consider it a real loss. This line is added in the english dub, and is absent in the original Japanese dub.
In Beta City Blues, when Dan and Baron were about to start their battle with Shadow and Mylene, neither of the two Brawlers, not even Drago, looked remotely shocked at how Hades looks exactly like Alpha Hydranoid. Dan's Gauntlet also said "Ability card set" when he turned it on before the brawl.
In Brotherly Love, Spectra said, "Ability activate! Ability card set! Diffuse Quasar!", when it's usually the Gauntlet that says "ability card set."
In Wall To Wall Brawl, when Dan activated Pyrus Reactor, it showed Dark Hound instead of Grakas Hound.
In Reunion, after Drago and Helios got their Maxus pieces blown off of them, Spectra says, "Maxus Helios, what is happening?"
In The Day New Vestroia Stood Still, Shun activates the Gate Card Element Merge by saying: Gate Card set! Bakugan brawl! Storm Skyress descend!
In Elfin On the Run, after Preyas defeated Dryoid and MAC Spider, the gauntlet refers to Hydron as "Prince Hydron," even though Hydron himself stated that he's no longer the prince of Vestal.
- When the computerized voice reads out Marucho's life gauge after the end of the first round, it claims he has 30% of his points left, when in fact he has 40%. Later, when Elfin is defeated, the voice claims that Marucho's life drops to 10%, when in fact it is 20%.
- Tripod Epsilon's name is untranslated, using the name Tripod Theta in this episode.
In Samurai Showdown, Ingram got knocked out twice, so the Ventus energy should have been taken, but it wasn't for whatever reason. Also, in the preview of Virtual Insanity, Julie says that Billy comes along and brings Lync and Mylene when it is actually Shadow and Mylene.
In Avenging Spectra, once Zenoheld uses Assail Farbros, the Life-force bars disappear entirely for no reason, whereas, in other fights, the bars remained until the battle was over.
- There is no explainable way how Gus and Vulcan survived the blast, as they were both blasted directly with nothing to shield them.
In BT: The Final Battle, Zenoheld says that Farbros' ability "Ice Burst" freezes only non-mechanical opponent Bakugan. Still, in An Heir To Spare, it worked on Dryoid, who is entirely mechanical, although Dryoid broke free using a heating system without using an ability.
- Despite Helios using Chaos Boost Cannon, the pistons on the sides of his mouth poked out in later scenes when he was still using it.
In Exodus, there is a huge timing inconsistency. Such as Baron saying "30 seconds left!", and after 30 seconds, the BT System didn't activate. It continued with 15 seconds, and 5 seconds.
In Phantom Data Attack, Ace said that Battle Crusher's ability nullifies Baron and Nemus's ability. He was supposed to say Piercian, not Baron, because Baron is a brawler and not a Bakugan. Also, Battle Crusher is mistranslated as "Battle Crasher," but it was corrected in later episodes.
In An Heir To Spare, after Farbros' claws got destroyed by Dryoid and it was about to use Geki Grip Demon, its claws are shown to be repaired for a moment before Zenoheld used FARBAS XM. Another question is that Mylene says that she used the Death Ball before, but who did she use it on and why? Yet another question is that Marucho transported Spectra and Mira before Mylene and Shadow were sucked into the death ball, so they should have been transported too. Why weren't they?
In Ultimate Weapon, When Zenoheld uses Farbros' ability Hyped Cell, it shows Farbros in his original form for a brief moment, even though Zenoheld used the Assail System.
- It happens again, though less noticeable when the blast of the Alternative was about to hit the Planetoid.
In All for One, when Helios MK2 used Twin Destructor to destroy the blasters of the Alternative Weapon System, his left eye was shown natural in a few shots. His left eye is mechanical.
In Final Fury, a Pyrus Snapzoid bit Knight Percival's sword in half, but it was repaired when he destroyed the Alternative.

Bakugan: Gundalian Invaders

At the beginning of the episodes, Boomix is on the right side of Linehalt instead of the left.
In some scenes involving Zenet in her disguise, an eye is shown under her "hat." However, in her pure form, Zenet's "hat" is a part of her body, so there shouldn't be an eye there.
In A New Beginning, Dan tells Julie that Jake is only familiar with the digital Bakugan from Interspace and that he only knew that Bakugan are capable of talking to humans when Dan showed Drago to Jake. However, this does not make any sense because, in the first season, a bunch of Bakugan cards fell from the sky and, eventually, Naga, and his minions invaded Earth (which means that the news of "aliens" invading Earth spread all across the globe). Even if Jake had no interest in playing Bakugan back then, there was no way for him not to know that "real" Bakugan exist.
In The Visitor, when Dan throws JetKor, he says "battle gear ability activate! JetKor Delta!" and after he equips it to Helix Dragonoid, he activates the ability JetKor Delta, whose name he calls again. This is the same with Fabia when she throws Battle Crusher; she says, "Battle Gear boost! Battle Gear Ability activate!"
- When Fabia battles Koji Beetle, he activated an ability that he says will protect his Luxtor from his opponent's abilities and Gate Cards. Still, Fabia uses an ability anyway, and it works.
- When Fabia activates Merlix's ability Jinx Magic, Ren's skin was yellow for a second.
- After Dan defeats Fabia, the writers mistranslated a phrase making Fabia sound like she was insulting Aranaut.
In True Colours, Fabia said that Humans and Bakugan lived peacefully on Neathia.
After Ren Krawler left the Bralwers at the end of True Colours he still appears in the intro in Hostile Takeover to The Sacred Orb. This is fixed in the Japanese Version where Fabia takes Ren's place starting in Hostile Takeover.
In Twin Evil, Zenet said that she's not going back to Neathia without the element when she's supposed to say Gundalia, she later says that the brawlers are coming to Neathia, instead of going. Also, when Zenet activates Misty Solitude, Dan breaks through, and she says, "Talk about a defensive ability!" when she should have said, "Gate Card."
In The Secret Switch, Stoica said that Plitheon would keep pummeling Aranaut until Dan brings Drago out, but it was Lythirus pummeling Aranaut, not Plitheon.
In Curtain Call, Jesse calls his Vilantor Gear: "Sonic Gear." The same sort of thing happens in A New Beginning, where Ren calls Boomix: "Mega Blaster."
- This is a recurring translation error, as "Sonic Gear" and "Mega Blaster" are the actual translations of Vilantor and Boomix's Japanese names, despite their official names being "Vilantor" and "Boomix."
- Starting from this episode, Ren calls Boomix, "Mega Blaster," which is its Japanese name. Although, in previous episodes, the Bakumeter calls it Boomix.
In The Secret of the Orb, After Sabator knocks down Aranaut and Akwimos Marucho says "Ren has gotten so much stronger even though it was Nurzak who used Sabator.
In Partners 'Til the End, at one point, it shows Zenet in human form on the Intermission Screen along with Contestir even though she has revealed her pure form.
- Zenet activated a battle gear ability without using an ability card.
In Divide and Conquer, when it first showed Drago in ball form, it showed Helix Dragonoid instead of Lumino Dragonoid.
- When Sabator was battling Dharak, not one time during the battle did Sabator's hind parts fold-out, excluding the feet, which can barely be seen since the feet are attached to the back.
In Sid Returns. When Rubanoid, Drago, and Linehalt all get hit, their power levels are even so they should not have lost life points.
- Rubanoid uses a battle gear ability without Sid using an ability card.
- Battle Gear cannot be detached from a Bakugan's body during a battle, but somehow Boomix can separate from Linehalt easily by Drago, as shown in this episode. It happened again in Dragonoid Colossus against Barodius and Dharak.
- Ren refers to Mobile Assault Vehicles as "Battle Vehicles," which is the Japanese name.
In Colossus Dharak, when AirKor attaches to Dharak Colossus, it can be seen that there is not enough room.
- Lumino Dragonoid used Blaze Reflector without Dan activating an ability.
People have often questioned, "Is Exokor alive?" Due to its "screaming" and struggling when Kazarina was giving it upgrades. It is likely alive as Dragonoid Colossus is alive too, despite their metallic qualities.
In Forgiveness, Dan is shown having six fingers on his right hand when he's speaking with Fabia.
In Jake Returns, Dan uses the battle gear Cross Buster but calls it Explosix. This may be because Explosix is the name of the real toy.
In True Evolution, when the battle between Blitz Dragonoid and Dharak almost ends, Dragonoid Colossus suddenly appears explaining Drago's new power. However, it is not shown how and why he seems. In the next scene, he disappears. Barodius also called Dharak, Dharak Colossus, before he attached to Exokor, Smashtor, and Riptor.
- Also, when the battle between Drago and Dharak ends, Emperor Barodius said that he never saw Dharak lose before. But Sabator had already defeated Dharak in one round in Divide and Conquer before. Maybe he meant that Dharak had never lost an entire game before, for when Sabator defeated him, it was only for one round.
In Broken Spell, Nurzak called Sabator "Haos Sabator."
In Destiny Revealed, Barodius is standing without sinking into the pond of sacred orb's den without a pure heart.
- Drago refers to the pre-separation Vestroia as New Vestroia, despite technically being the old Vestroia.

Bakugan: Mechtanium Surge

In some episodes, the Life Gauge goes down partially, but there is no G-Power shown.
In the Bakugan interspace arenas where the crowds are, why wasn't there a forcefield there to prevent people from falling or being hit?
In the first few episodes of the season, Sellon's name was mispronounced as "Salon", but it was corrected in later episodes.
Despite Phantom Data Attack and All for One making a point of the Bakugan in the phantom data being unknown on Vestroia, some of them make appearances as Vestroian Bakugan in several episodes.
It is unknown why Dan was being disrespected so much despite saving Earth, New Vestroia, Vestal, Gundalia and Neathia. One theory is because of the negative energy caused by Mag Mel, which caused people to behave differently.
In Interspace Showdown, Marucho said Drago was too big to move around in the space he was battling Bolcanon in. Even so, Bolcanon was much larger than Drago and moved around quickly. Also, Drago could retract his wings, which he eventually did.
- In the same episode, when Marucho said he wished it was like the "peaceful days" when he and Dan created the rules, but it was Dan and Shun who created the rules of the Bakugan game. (The Japanese version only says "Dan")
- Later in BakuNano Explosion, it was mentioned again. However, Sellon knew that Shun and Dan made the game, but it is unknown how. Though Dan could've been bragging about it off-screen, which is not unlike him.
In Mechtogan Mayhem, when Zenthon appeared in the middle of Marucho and Jack's battle, nobody knew who he was or what he was. But after the battle, Marucho says "that Mechtogan," like they had faced them before. But Zenthon never spoke during the second battle, so nobody knew he was a Mechtogan. (Due to Dylan creating the word "Mechtogan" in the Japanese version, it was announced very quickly as well, in which the English dub does not note of.
In Return to New Vestroia, Drago claims that he used to train on the island. However, he was born after the Perfect Core split into the Infinity Core and the Silent Core, when there wouldn't have been an island. Also, following his resurrection as Neo Dragonoid, he spent all of his time with Dan, making this statement a continuity error.
In Chaos Control, Anubias says "This is going to be fun. Now! Iron Dragonoid and Mechtogan Venexus, attack!" twice in the same scene.
In A Royale Pain, Robin and Soon said the ability of each other's Bakugan. In other words, Robin said Krowll's ability and Soon said Bolcanon's ability. Rafe and Paige also refers to Fabia as "Princess Fabia" despite being the queen now.
Shun somehow knew what Chaos Bakugan were before the Brawlers were notified of what the Bakugan were called.
In Triple Threat, Sellon summons Pyrus, Subterra, and Ventus Iron Dragonoids, however, when the scene goes back to New Vestroia, the Pyrus Iron Dragonoid changed to Haos. Perhaps one of them was defeated and Sellon summoned another one.
- At the end of the episode, all the Chaos Bakugan were of Darkus attribute. However, in the next episode, all Iron Dragonoids and Flash Ingrams were changed into Subterra, and Ventus attributes, respectively.
In Interspace Armageddon, when Mutant Helios used Destroy Quasar + Dragon Force Striker, one of the targets was Bolcanon; however, he was already defeated by the Ziperator of Ben and Robin earlier.
In The Final Takedown, Razen Titan's teeth and claws are colored silver for a few seconds, when they are usually gold.
- In the same episode, when Zenthon and Zenthon Titan first appear, Zenthon is shown to be much taller than usual compared to his Titan counterpart. While in standard cases, he was barely at Zenthon Titan's waist; in this scene, he was well past the Titan's torso in height.
Some BakuFusion Bakugan are mistakenly called Baku Sky Raiders, such as Radizen in Evil Arrival, and Spatterix and Stronk in Countdown to Doomsday.
- Also, Skytruss and Orbeum are not referred to as Baku Sky Raiders in The Eve of Extermination, with Shun shouting, "Bakugan, stand!"
In Mysterious Bond, when Dan activates Dragon Overcannon for the first time, Fusion Dragonoid was shown only using Dragon Trasher.
In Combination Impossible, when Worton and Balista combine, Marucho says that they will see how Ventus and Aquos work together when they already had with Tayghen and Hairadee.
- In the same episode, when Wiseman activates an ability for Balista, the card emits a green colored Ventus glow, when it is an Aquos ability.
The English dub forgot to put distinction of Supreme - Jet Shot between Jaakor's and Magmafury's, leading to confusion that it is an error to have a Sky Raider Combination used as an average Ability when it is not. For Magmafury, it ends with Final Order (吩).
In the Japanese version of Countdown to Doomsday, Marucho activates Deep Descent for Radizen. However, the animation is actually for Abyss Blade.
In Jump to Victory, there is a scene where Dragonoid Destroyer is shown using Earth Revolver and Force Cannon at the same time, but that is impossible because it can't attack with two abilities. Also, only the attack Force Cannon was seen in attacking Volkaos.
Before the above happens, Dan states that Dragonoid Destroyer only has enough juice left for one attack. Yet, aside from those two attacks, he also uses Hyper Cross Cannon, totalling three attacks.
Thorak appears to say an ability called Chain Dragon when he "transforms." Fans have wondered if it's an ability or a catchphrase.
In Evil Evolution, Coredegon said that the Nonet Bakugan betrayed him and the rogue Mechtogan. However, Coredegon and the rogue Mechtogan left the Nonets for dead in the Doom Dimension, merely trying to trick Gunz.
In Evil vs. Evil, Dan said Drago once teleported out of the Doom Dimension. However, the Legendary Soldiers teleported him and the rest of the Battle Brawlers out the first time, though this is likely what he meant.
- When Gunz activated the ability Battle Smasher, Kodokor's other ability Combat Smasher was used. This is most likely an error.
- When Mechtavius Destroyer shoots down Betadron, Kodokor, and Mutabrid during their attempt to combine, Kodokor is seen closest to Mechtavius Destroyer. Still, the next frames show Mutabrid as the closer one.
In Doom Dimension Throwdown, the color of the Perfect Core of Drago, as seen in the preview, was separated to its place for one second.
In Blast From the Past, Preyas didn't move his mouth while talking to Mechtavius Destroyer.
- Blade Tigrerra somehow nullifies Mechtavius Destroyer's attacks quickly, even though it was now dominant and wholly resurrected.
In End of the Line, when Thorak, Flytris, and Chromopod give their power to Dragonoid Destroyer, they each turn into beams that are the color of their attribute. Flytris turns into a blue (Aquos) beam, but when their power is seen going into Dragonoid Destroyer, the laser is red.

Other

Most of the Ability cards that block the opponent from activating abilities are not as effective as most of the brawlers use abilities usually.
In the Bakugan Video Game for Wii, after you beat Marduk for the last time on Story Mode, the next time you hold Omega Leonidas in your hand, his feet are set out wrong.
Many times ability cards are used twice in a battle, which was thought to be illegal.
It is unexplained how the same voice in the BakuPod in Bakugan Battle Brawlers is the same as the one in the Gauntlet in New Vestroia and the BakuMeter in Gundalian Invaders.
In Bakugan: Defenders of the Core, Master Ingram is referred to as "she." Also, many of the Resistance Bakugan have different or incorrect ball forms or wrong names. For example, Minx Elfin is called Dual Elfin in the game. This is corrected in the Japanese version of the game.
Also, In Bakugan: Defenders of the Core, in the scene before you brawl Spectra for the first time, it shows Drago in his Neo Dragonoid ball form, when he had just evolved into Cross Dragonoid.
When Elico stands at a certain level of Bakugan: Defenders of the Core, he makes Hades's roar instead of his own.
Shun got somehow got his Ravenoid and Falconeer back even after being sent to the doom dimension.