* AnimeFirst
* CashCowFranchise: An obvious trope considering how they promote a lot of the monsters once. It's also TMS's fourth (alongside Franchise/{{Anpanman}}, DetectiveConan and Franchise/LupinIII).
* HeyItsThatVoice: Let's Start with the Japanese version:
** Dan [[YuKobayashi is]] [[MahouSenseiNegima Setsuna Sakurazaki]]. So Dan is once a Magician.
** Drago [[Creator/KeijiFujiwara is]] [[Anime/FullmetalAlchemist Maes Hughes]]. So Drago once spends much of his time using the military phone lines to brag to Mustang about his family.
** Marucho [[Creator/RyoHirohashi is]] [[VisualNovel/{{CLANNAD}} Kyou Fujibayashi]]. Marucho is a the lost Fujibayashi brother.
** [[Creator/EriSendai Runo]] just traded her [[Manga/GunslingerGirl guns]] for a Bakugan.
** Shun [[ChihiroSuzuki is]] [[ElfenLied Kouta]]. So Shun once saw a horned girl?
** Alice [[Creator/MamikoNoto is]] [[LightNovel/FullMetalPanic Shinji Kazama]]. [[PlayingAgainstType So that explains why she can become Masquerade, she cross-dresses all the time]]. She is also [[Manga/AhMyGoddess Sayoko Mishima]].
*** Cross Dressing Wise, she's also [[PrettyCureAllStars Ayumi Sakagami/Cure Echo]].
** Masquerade is voiced by Creator/SoichiroHoshi. [[MobileSuitGundamSEED Kira Yamato]] IS A '''CHAR'''!
*** He also voiced [[Manga/AiYoriAoshi Kaoru Hanabishi]].
** Tigrera [[AtsushiOno is]] [[{{Manga/Bleach}} Giriko Kutsuzawa]]. Tigrera is a secret member of Xcution.
** Naga [[HideyukiUmezu is]] once a [[Anime/MobileSuitGundam00 former member of Celestial Being]].
** Golem [[HirokiYasumoto is]] [[AquarionEvol Izumo Kamurogi]].
** DaisukeEndou plays as Shadow Prove. [[Manga/InuYasha Ginka becomes a Vestorian]].
** Mylene Farrow [[FukoSaito is]] [[{{Anime/AngelBeats}} Shiina]]. Mylene once wielded a kodachi before using a Bakugan.
** Elfin [[MakiKobayashi is]] either [[KoihimeMusou Bachou, Mouki or Sui]]
** Onto the English voices. Pretty much two third's of the cast are voiced by Canadian animation voice acting veterans and half of Bakugan: Gundalian Invaders also voiced [[MetalFightBeyblade Beyblade Metal Fusion]], if not all.
*** Mira, [[WesternAnimation/XMen Jubilee]]. Jubilee, [[Creator/AlysonCourt Mira]].
*** Julie's voice actress being the same woman who voiced Sailor Mars played this up big.
* NoExportForYou: ''New Vestroia'' combines this with ShortRunInPeru by not airing in ''Japan'' at all despite the series being created by the Japanese company TMS Entertainment and airing in Japan first.
** However, this was averted as ''New Vestroia'' aired a '''YEAR LATER''' in Japan, same goes with ''Gundalian Invaders''. But the sad thing is that TMS Entertainment will never release ''Mechtanium Surge'' in Japan due to how bad Gundalian Invaders performed in Japanese TV. Instead, Japan gets a more 'lighthearted' reboot named ''BakuTech! Bakugan'' and got its sister series {{Anime/Zoobles}} to fill its airing spot shoes. This made a lot of Japanese Bakugan Fans disappointed.
* TheOtherDarrin: There're several characters in the English dub have more then one actor, but isn't that noticeable (nor are they credited for that matter), Naga in particular had three.
* ShortRunInPeru: Sort of. ''Battle Brawlers'' episodes aired first in their country of origin, Japan. ''New Vestroia'' episodes also air in one of their countries of origin...Canada, home to North American distributor Nelvana. ''New Vestroia'' aired in Japan A YEAR after it was shown in North America.
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