* EarWorm: That big band theme is as catchy today as it was in 1964.
* EnsembleDarkhorse: Jade, who only appears in two episodes, became very popular precisely because of how little we knew about her. She also offers a tantalizing glimpse at Race's past.
* EthnicScrappy: Charlie, the Chinese cook in "The Sea Haunt", comes uncomfortably close.
* FairForItsDay: Nearly all the characters from more "exotic" countries - including villains - are little more than ethnic stereotypes of varying degrees by today's standards. This includes one of the ''main characters'', Hadji (though, despite this, Hadji was treated as an equal by Johnny, Race Bannon, and Dr. Quest). This leads to UnfortunateImplications in the case of some of the Asian villains, who clearly show shades of YellowPeril in their characterization.
** Speaking specifically of Dr. Zin, he is very much one of the trope codifiers for the Yellow Peril stereotype. In later productions Zin still maintains these elements but also is allowed to be a bit more funny than he was in the original series. Even still in 2015 his appearance in Spy Quest is very similar to how he was depicted in the 80s and 90s. Despite uproar over another Yellow Peril character's marketability, Dr. Zin seems to have not caused any detectable ruckus.
*** The original version of Zin is arguably much more understated than most yellow perils. He does ''not'' have the stock droopy moustache, talon-like fingernails, or a fashion sense 100 years out of date. Even his accent is relatively subtle. Regrettably, ''Jonny Quest vs. the Cyber-Insects'' went ahead and ''gave'' him a weird robe and a droopy mustache after all -- but fortunately, that film remains the exception, and he's usually depicted as he was in the original series. Interestingly, ''Comicbook/FutureQuest'' has revealed that he has a Western-style first name: he is Dr. Archimedes Zin.
* FirstInstallmentWins: The remakes and sequel series are generally not as favored as this original series.
* {{Narm}}: One episode features an Indian chief who is ''very'' obviously voiced by the same actor as Race, to the point that it's genuinely surprising it never turns out he's Race in disguise.
* [[ValuesDissonance/WesternAnimation Values Dissonance]]: Multiple TOS episodes are, these days, considered racist and sexist

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