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* AnticlimaxBoss: The governor. [[ImplacableMan Reza on the other hand]]...
* SugarWiki/AwesomeMusic: Music/EnnioMorricone at his usual finest throughout--albeit with a rather "trippy" twist. It's worth noting the score has often received more recognition than the actual movie.
* CompleteMonster: {{Colonel|Badass}} Günther "Gutierez" [[TheHeavy Reza]] is a [[SilentAntagonist silent villain]] who, throughout the movie, doesn't express a single emotion beyond self-satisfaction. He [[ColdBloodedTorture tortures Dr. Villega]] into identifying various members of a crowd as revolutionaries, then has them shot in front of him, smiling a little wider with each body that hits the ground. He's also the man responsible for the deaths of Juan's children and father, singlehandedly [[KnightOfCerebus causes the film to shift]] from BlackComedy to serious drama, leads an army ([[ANaziByAnyOtherName based on Italian fascist stormtroopers]]) that seems intent on [[SociopathicSoldier killing or imprisoning everyone they meet]], and in the climax, guns down [[spoiler:Mallory]] [[InTheBack from behind]]. This, coupled with his ImplacableMan status makes him utterly terrifying.
* EarWorm: "Sean-Sean...Sean-Sean..."
* EndingFatigue: Especially in the restored version, with a final flashback that interrupts the climactic battle for several minutes.
* JerkassWoobie: Juan, who had been established previously as a bandit, rapist and highwayman, is also subjected to bullying and brutal verbal abuse from a group of racists while riding in the same stage coach as them. He fully crosses into this in the second act, after [[spoiler:seeing his family killed]].
* MoralEventHorizon: Colonel Reza and the Mexican army cross it with the [[spoiler:murder of Juan's children.]]
* {{Narm}}: Despite Music/EnnioMorricone delivering his typical SugarWiki/AwesomeMusic...the "Sean-Sean" song can ''really'' ruin the moment with just how ''trippy'' it is!
* OvershadowedByAwesome: Has the misfortune of falling in between two of Leone's most celebrated films.
* SurprisinglySimilarCharacters: Juan and Max Lozoya from ''Don't Turn the Other Cheek'', which came out the same year. Both become revolutionary heroes by no will of their own and [[spoiler:both had their families killed by soldiers.]] Also, as mentioned below, Eli Wallach was meant to play one but ended up playing the other.
* WhatCouldhaveBeen: Eli Wallach was originally meant to play Juan, but United Artists wanted a bigger name, so they got Rod Steiger. Some foreign dubbing companies caught wind of this during the release of 'Don't Turn the Other Cheek' and had the same foreign actors voice both Steiger's Juan and Wallach's Max.
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