!!Specific
* According to ''Anime/EurekaSeven'', to end existence, all you have to do is [[LogicBomb make too many things think at once...]] thus reaching the limit of questions and causing the universe to overload. Dewey, the BigBad almost succeeds, [[spoiler:by waking up the dormant aliens that have covered the earth's crust]].
** Though this seems to happen only in the anime, where the thoughts have mass (the trapar is made of the dreams of the dormant Coralian crust). In the manga, the limit of questions is never mentioned. The motivations of the Coralians are very different, too.

!!General
* ActorAllusion: Creator/KariWahlgren playing a pink-haired CuteAndPsycho AxCrazy girl. [[Anime/{{FLCL}} Sound familiar?]]
* AnimeFirst
* AuthorExistenceFailure:
** Creator/BobPapenbrook, Ken-Goh's English voice actor, died during the dub's production due to chronic lung complications, and was replaced by Creator/KyleHebert for the remainder of the series.
** Creator/TakeshiAono, Axel Thurston's VA, died of complications from a stroke in 2012 before production of the ''Hi-Evolution'' trilogy, meaning a new voice actor would be required for it if he does have a speaking role.
* EnhancedOnDVD: It is very notable upon watching the final episode that a lot of major changes are implemented to the ending to help it pop out, such as changing the colorful energy around the world the story takes place on [[spoiler:(the Earth)]] from a muddy orange to a minty blue, and more clearly depicting the terrain of the planet changing with the Scub Corals leaving to indicate its true identity [[spoiler:as Earth all along]]. However, a change that some people find disconcerting is the fact the original TV broadcast had a special end card showing Renton and Eureka [[spoiler:as a couple back on Earth, with their children, proving unquestionably that they made it back home.]]
* FanNickname: Renton and Eureka are respectively nicknamed "[=RenTears=]" and "[=EuWrecka=]" whenever they get overly emotional.
* HeyItsThatPlace: Fallingwater is the setting for part of an episode.
* TheOtherDarrin:
** In the English dub, Ken-Goh's voice actor Creator/BobPapenbrook was replaced by Creator/KyleHebert due to the former's aforementioned AuthorExistenceFailure.
** This may also happen for Creator/TakeshiAono as Axel Thurston in ''Hi-Evolution'', following the actor's passing in 2012.
* TheOtherMarty: Creator/YuriLowenthal was originally going to voice Renton, but was soon replaced by Creator/JohnnyYongBosch because Lowenthal's voice was too low for the role.
* RelationshipVoiceActor:
** Yet again, Creator/JohnnyYongBosch and Creator/StephanieSheh [[Anime/TengenToppaGurrenLagann are]] [[Manga/{{Bleach}} lovers]].
** It might have been the first time that Creator/CrispinFreeman's character was really pissed off by Bosch's character, but [[Anime/CodeGeass it definitely wouldn't]] [[LightNovel/{{Durarara}} be the last]].
** Creator/StephanieSheh (Eureka's English [=VA=]) and Creator/KateHiggins (Talho's English [=VA=]) would also later team up again as [[Manga/SailorMoon Sailor Moon and Sailor Mercury]].
** For ''Anime/{{Gundam 00}}'' fans, [[Creator/MamoruMiyano Moondoggie]] is Setsuna F. Seiei, [[Creator/YasunoriMatsumoto Stoner]] is Alejandro Corner, and they both serve aboard the ''Gekko'' under the command of [[Creator/KeijiFujiwara Ali al-Saachez]].
* TheWikiRule: [[http://eurekaseven.wikia.com/wiki/Eureka_Seven_Wiki Eureka Seven Wiki.]]
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