* AmericansHateTingle: Despite being voted as the favorite heroine in the famous Japanese magazine ''Animage'', Nadia herself has had her fair share of detractors (DVD Verdict's Joel Pearce, in particular has called her "one of the worst heroines of all time"). Even certain critics have found the Grandis Gang annoying.
* BigLippedAlligatorMoment: The Island/Africa episodes (23-34), save 30 (well, parts of it anyway) and 31. All you need to know about them is: Jean, Nadia, Marie, and King wash up on an island and meet up with Grandis, Sanson, Hanson, and Ayerton on another island. At this point, one can watch 30 and 31 and skip right to 35.
** Also the sequel movie, which was not produced by Gainax, has nothing to do with the original plot, and recycles over half an hour of footage.
* CrowningMusicOfAwesome: The music score for the final battle between [[spoiler: New Nautilus]] and [[spoiler: Red Noah]].
* EarWorm: The opening song, [[http://www.youtube.com/watch?v=51TROMvrlh8 "Blue Water".]]
* GatewaySeries: ''Nadia'' was arguably {{Studio Gainax}}'s biggest success before ''Evangelion''. The title of ''Anime/WelcomeToTheNHK'' is a ShoutOut to how many {{Otaku}} -- and {{Hikikomori}} -- first became interested because of this series.
* [[MemeticSexGod Memetic Sex Goddess]]: Nadia: [[AmbiguouslyBrown caramel complexion]], [[HeadTiltinglyKinky acrobatic]], wears a {{stripperiffic}} circus costume that includes a {{loincloth}}, and is [[JailBait quite nubile despite being only 14.]]
* ShockingSwerve: [[spoiler: Electra is pregnant with Nemo's child!?]]
** That's nothing. [[spoiler: Marie (about 5 years old for the main story) is pregnant and married to Sanson!!]]
* WhatDoYouMeanItsNotForKids: Despite its generally lighthearted narrative, there are many scenes (and several episodes) that are decidedly dark. Several characters are executed onscreen quite graphically, the heroine [[DrivenToSuicide tries to commit suicide]] at one point, and later, shoots [[spoiler: her father, Nemo]], while [[BrainwashedAndCrazy under Gargoyle's control]]. There's also a brief instance of racism and, near the end (between episodes 30 and 31), Nadia spends nearly two full episodes nude.

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