* BaseBreakingCharacter: Both Julianna & Frank, the main protagonists of the story suffer this, especially once season 2 rolls around.
** Frank's personal resistance storyline in season two, where he turns into a whiny jerkass to Ed & Childan for no apparent reason, while also immediately cheating on Julianna with the Japanese resistance woman soured him for a lot of people, leading to his 'winning' polls for the least popular character in the show. In a show with multiple genocidal murdering fascists in the main cast.
** Julianna gets comparisons with Skylar from ''Series/BreakingBad'', being accused of idiotic, aggravating behaviour and making stupid choices, helping the Nazis & Japanese, while continually betraying everyone who trusts her, and contradictory words & actions, which only justify the Resistance turning against her for [[spoiler:Karen's death]].
* CompleteMonster: The live-action adaptation's version of Oberstgruppenfuehrer UsefulNotes/ReinhardHeydrich is the second-in-command of the [[StateSec SS]], the organization charged with enforcing the UsefulNotes/NaziGermany ideology of a MasterRace. Organizing [[UsefulNotes/TheHolocaust the total genocide of the Jewish people]] in both Europe and Nazi-occupied America, Heydrich also gleefully enslaved the entire continent of Africa, referring to the population as "tribal subhumanoids". Wishing to exterminate the Japanese whom even UsefulNotes/AdolfHitler wished to keep an alliance with so the Nazis could rule the world alone, Heydrich orchestrates the public assassination of the visiting Japanese Crown Prince to attempt to provoke a declaration of war. When a remorseful Nazi spy passes on nuclear technology to his Japanese contacts in an attempt to preserve peace, Heydrich hunts him down, only keeping him alive because of his access to Hitler, and threatens to kill his family if he does not assist Heydrich in his assassination of the Führer. Wishing to kill the Nazi leader to [[TheStarscream take over the Third Reich]] and destroy the Japanese Home Islands, when his scheme is discovered by John Smith, Heydrich invites him to a hunting party to arrange an "accidental death" for him to keep his scheme under wraps. Wearing his title as "The Man with the Iron Heart" with pride, Heydrich is a remorseless man [[TheDreaded feared and despised]] by even fellow Nazis.
* CriticalResearchFailure:
** The name of the German-occupied "Greater Nazi Reich" doesn't really make sense. "Nazi" was a German colloquial abbreviation of "national socialist" and was [[https://en.wikipedia.org/wiki/Nazism#Etymology never officially in use during the period of the Nazi rule in Germany]] - officially naming a state like that would have been like officially calling the USA "United Yank States" or the USSR "Commie Union of Russia". The real name the Nazis used was Greater ''German'' Reich.
** In the TV show: as in the book, characters whose surnames are traditionally associated with Jewish heritage change their names to avoid persecution, even if they aren't actually of Jewish descent and/or don't personally identify as Jewish, with Frank Frink (originally Frank ''Fink'') a prominent example discussed in-universe. So how the heck is no-one talking about the fact that the Obergruppenführer's son is being treated by a doctor named ''Adler''?
*** [[https://en.wikipedia.org/wiki/Adler Adler]] [[BilingualBonus is German for "Eagle",]] so it presumably slipped under the radar.
** In the TV show at one point Smith listens to ''Mack The Knife'' on a record player. Considering the song is from an unapologeticly Marxist stage musical, it's very unlikely that a loyal Nazi officer would pick that particular song to listen to...)
* CultClassic: In the alternate history fandom. It's now reached mainstream appeal with the Live Action adaptation on Amazon TV.
* DracoInLeatherPants: Obergruppenfuhrer John Smith, due to being a SharpDressedMan played by Rufus Sewell and his sympathetic traits like his love for his family above everything else. Also the fact they he was a U.S. military officer before Axis victory and indications of him being a PunchClockVillain whose hand was forced by the Nazis winning the war also further helps.
* EvilIsSexy: Obergruppenfuhrer John Smith. Maybe it's the fact that he's played by Rufus Sewell or that he's a SharpDressedMan, but he is just ''sexy''.
* GeniusBonus: In "Revelations", it is shown that the secret "Baynes" tries to get over [[spoiler:are nuclear fission formulas.]]
* HilariousInHindsight:
** The way the Japanese fawn over the tritest American kitsch in the book is funnier now, after the rise of anime and manga fandom in the United States, some members of which do the exact same thing to Japanese culture.
** Tagomi's interest in learning about the novel ''Literature/{{Lolita}}'' clearly is meant for intentional humor, as there is a [[UsefulNotes/LolitaFashion "Lolita fashion" subculture]], and also a notorious underground "Lolita-fetish", in contemporary Japan.
* {{Narm}}: As Abendsen explains how he figured out how to stop the nuclear war to Julianna, his voice is overcome with emotion. Unfortunately, he ends up sounding like [[WesternAnimation/KingOfTheHill Bill Dauterive]].
* NauseaFuel: The Nazi doctors inventing new uses for dead bodies, such as using the joint of the big toe as a mechanism for a lighter.
* OneSceneWonder:
** Jim [=McCarthy=], Ed's grandfather. He appears in only two scenes (one of which consists entirely of him shooting insults at Frank over the phone), but manages to make a deeper impact than some of the main cast.
** A bar hostess required by her job to keep company and make conversation with an unwilling Inspector Kido, voices her observations about him that seem to touch a deep nerve in Kido. A couple of episodes later, she turns up again and now the two seem to be working to manipulate Kido's distracted superior into signing off on an official order; afterward the Inspector and the hostess exchange satisfied glances.
* SpiritualSuccessor: To the revived ''[[Series/BattlestarGalactica2003 Battlestar Galactica]]'' series. Three actors from ''Galactica'' play Resistance members in ''High Castle''. And unexplained fantasy metaphysics along with the presence of seemingly omniscient advisors in the midst of science fiction are important details in both series. Also, current politics and events and history in today's contemporary world are playing out in -- or are being read into -- the themes and plots in both series.