* DubNameChange: Apparently, the reason why the characters have English names in Europe (despite they explicitly say they're Japanese) is because the European publisher of the anime wanted to repeat the (insane) success that CaptainTsubasa got during the early 90s. Guess how were the characters of that series named in Europe.
** Averted in the Mexican Spanish dub, albeit Mamoru Endo was renamed with ''Satoru'' Endo, since ''Mamoru'' sounds like a offensive slang in Spanish.
* HeyItsThatVoice:
** [[MamoruMiyano Light]] decided that he wanted to play soccer, but ended up fighting with [[Manga/DeathNote Kira]] in an epic BattleInTheCenterOfTheMind.
** [[Creator/JunkoTakeuchi Naruto]] is Endou; as well as [[Anime/DigimonAdventure Gomamon]] and [[Anime/DigimonFrontier Takuya]].
** Goenji is [[Anime/DigimonSavers Thomas H. Norstein]]
** Hiroto Kiyama is half-[[Manga/AxisPowersHetalia Finnish]]. Also, he's [[SetoNoHanayome Nagasumi]].
** Kidou is also a former member of [[MobileSuitGundam00 Celestial Being]]. Then, he's [[Manga/FullmetalAlchemist Kimblee]].
** Kabeyama is [[SamuraiSeven Okara]].
** Someoka is [[MobileSuitGundam00 Sumeragi's dead lover]] and [[Manga/{{Naruto}} Kankuro]].
** Wouldn't it be better if Domon was wearing some [[Manga/AxisPowersHetalia clothes from HRE]]?
** Natsumi had to train herself against Akumas by her teacher, [[Manga/DGrayMan Allen Walker]].
** Fuyuka is [[MobileSuitGundam00 Mileina Vashti]].
** Coach Hibiki is [[Manga/FullmetalAlchemist Priest Cornello]].
** Aphrodi is [[Anime/EurekaSeven Renton Thurston]].
** Touko is [[MobileSuitGundam00 Feldt Grace]]. No wonder she's going to be a CIC after she retires from soccer.
** Rika is [[SoulSeries Taki]].
** Toramaru is the prez of his joy luck club along with [[Manga/AxisPowersHetalia Liechtenstein]], [[MobileSuitGundam00 Nena Trinity]], [[Manga/FullmetalAlchemist Alphonse]] and finally [[Anime/DigimonSavers Ikuto Noguchi]].
** Yuuichi Tsurugi is also [[HeartcatchPrettyCure another ill brother in another show]].
** Fei Rune is [[MegaManBattleNetwork Rockman.EXE]]
** Keita Kakuma (and Burn) are... [[{{Pokemon}} Paul]].
** There is a disproportionate amount of seiyuus from Hetalia who worked in Inazuma Eleven, to be noticed.
** Latin dub? [[Manga/DeathNote Light]] is Gouenji, L is Sakuma, Midorikawa is Mello, Misa is Haruna and Takada is Hitomiko; [[Manga/{{Bleach}} Hanataro]] is Fubuki, and Renji is Burn ''and'' Handa[[note]]actually, you'll hear Handa ''many'' times is the Latin dub[[/note]]; Rika is [[WesternAnimation/JackieChanAdventures Jade]], [[WesternAnimation/TheGrimAdventuresOfBillyAndMandy Mandy]] is Gazelle and [[Manga/DragonBall Goku]] is Kakuma.
*** Also in the latin dub, [[{{Eyeshield21}} Sena]][ dropped american football for soccer and started to use dreads, goggles and a cape.
*** Another one to add: [[NiceGuy Tsunami]], of all people, is ''[[{{Pokemon}} Pa]][[JerkAss ul]]''.
** Let's not begin with the Spaniard dub. The most curious thing about it is that a lot of the voice actors who dubbed CaptainTsubasa back in the day are back in this unintended SpiritualSequel.
** In the Italian dub, Endo, of all the people, is [[CoryInTheHouse Cory]]!
** In the British dub, Endou is [[ProfessorLayton Luke Triton]]. This can prove to be quite amusing whenever you hear Endou yell out things such as "Blast! What went wrong?" whenever you get scored against, in the voice of a gentleman-to-be.
* OfficialFanSubmittedContent: On the last episode of Go's first season a girl with a rainbow theme and a boy with a metalic theme were featured with their own hissatsu. The characters and the hissatsu were the winning submissions of a contest where a fan-character and a fan-hissatsu would be animated in the series.
* TheOtherDarrin: A ''crazy'' example for the Italian dub. In the anime, which was released one year before the games, Gouenji's voice actor is changed somewhere around the beginning af the arc based on the second game's plot. In the first game, Gouenji haves the second anime voice... which is replaced in the subsequent chapters with his first anime voice.
* ThrowItIn: Kurumada's "shupoh!" was an ad-lib the first time.