* [[BigBad El Indio]] is quite possibly the scariest character in the entire trilogy. Unlike [[Film/TheGoodTheBadAndTheUgly Angel Eyes]], who at least had a specific goal, Indio is a [[ChaosIsEvil chaotic]] {{sociopath}} who only [[ForTheEvulz enjoys the monstrosities he carries out]], and his level of violence and brutality [[AxCrazy is pretty random]]. And as if that weren't enough, he has no loyalty to anyone, not even his own henchmen, who are mere disposable pawns to him. He's pretty much what would happen if you dropped ComicBook/TheJoker into TheWildWest, ''that's how terrifying he is''.
** Indio's EstablishingCharacterMoment is one of cinematic legend. He confronts a traitorous member of his gang, said gang member's wife, as well as their baby child. Indio then kills both the wife as well as the baby in order to make sure said man is emotionally broken. He ''then'' duels him when there's no chance of him winning.
** El Indio is particularly terrifying when he's under the influence of what appears to be marijuana, ''where he loses any kind of judgment and proceeds to become more randomly violent than he already is''. This is especially noticeable when he kills Cuccilo.
* The flashback. El Indio watches a couple on a bed, happy and content, before murdering the boy then raping the girl. The girl proceeds to commit suicide in order to stop him. This is notably the inciting incident that compels the Colonel, who was her brother, to hunt him down.
* The scene where Mortimer and Manco are tortured is somewhat disturbing, especially because this is just ForTheEvulz. They are rounded up in a circle and pretty much beaten from one goon to the next.
* The eerie music box tune that plays during some of the most tense moments in the film.
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