Predators

The Predator spares Cantrell because its helmet scanners detect that she is pregnant. Throughout the Predator franchise, the species has a code of honor that prevents them from hunting pregnant females, considering them off-limits. This is why Lambert is killed while Cantrell is allowed to live.

Earlier scenes establish the Predator as a methodical hunter that selectively chooses its targets.

The flintlock pistol engraved with "Raphael Adolini 1715" is a symbolic reward given to Harrigan by the elder Predator. This same pistol was given to Dutch in the original 1987 Predator film, establishing that humans who prove themselves worthy adversaries receive this honor. It also hints at a long history of Predators hunting on Earth, with this being one of many encounters across centuries.

The Predator's code of honor is established throughout the film when it spares certain targets.

The elder Predator rewards Harrigan because he proved himself a worthy opponent by defeating their hunter in single combat. The Predators respect strength and skill, and Harrigan demonstrated both by surviving the hunt and ultimately killing the creature. This is consistent with the Predator species' warrior code, where defeating one of their hunters earns respect rather than revenge.

The Predator's honorable behavior is shown earlier when it spares Cantrell.

Keyes is killed by the Predator during the climax. After his elaborate trap in the slaughterhouse fails because the Predator detects his team's movements through thermal and footstep scanning, Keyes attempts one final use of cryogenic weapons. The Predator kills him with a Smart Disc before Harrigan can intervene. Keyes dies as the Predator disables his freeze weapon and strikes him down.

Keyes's methodical but overconfident approach was established earlier when he took control of the investigation.

The Predator detects Keyes's trap through its advanced scanning technology. The creature uses infrared vision to see through the thermal insulation suits worn by Keyes's team, and it can track footsteps with extraordinary precision. This allows the Predator to anticipate every move, turn the trap against the hunters, and slaughter them one by one. The technology far exceeds anything human science can match.

The Predator's scanning abilities are first hinted at when it observes the firefight from the shadows.

The Predator kills Lambert because he is a combatant target, but spares Cantrell because her pregnancy registers on the Predator's biological scanners. The species has a code against hunting pregnant females, which the creature strictly follows. This selective killing is part of the Predator's honor system, distinguishing between valid prey and those it considers off-limits.

The Predator is shown as a methodical hunter throughout, choosing its targets carefully.

After the rooftop confrontation, the Predator retreats to an underground chamber containing a hidden spacecraft. This is where the Predator came to Earth and where it plans to escape. Harrigan pursues it into this chamber for the final duel, ultimately killing the creature inside its own ship before the Predators retrieve their fallen comrade.

The Predator's presence on Earth is established early when it watches the cartel war.

Harrigan's acrophobia, or fear of heights, becomes relevant during the rooftop confrontations with the Predator. His fear is so severe that he initially dismisses his first sighting of the creature on the roof as a mirage caused by heat and his own anxiety. This psychological vulnerability makes his later ability to fight the Predator on rooftops and ultimately pursue it to the underground ship even more significant, as he must overcome his greatest fear.

Harrigan dismisses the first Predator sighting as a mirage caused by heat and his acrophobia.

The Predator arrived on Earth via a spacecraft that lands in an underground chamber beneath Los Angeles. The film doesn't explicitly explain the purpose of this visit, but the Predator's behavior suggests it came to hunt, a common activity for the species. The creature was drawn to the violence of the cartel turf war, which provided cover for its own hunt.

The Predator watches the cartel war from the shadows, seemingly drawn to the conflict.

The Predator kills the drug cartels because they represent easy prey in a violent environment that masks its own hunting activities. The creature was drawn to the turf war between the Colombian and Jamaican cartels, using the chaos as cover to hunt humans. It kills both groups in separate incidents, taking trophies from each massacre. The drug violence essentially served as a convenient distraction for the Predator's activities.

The ending implies that the Predator threat is far from over. After Harrigan kills the first creature, a group of cloaked Predators arrives to retrieve their fallen comrade. The elder rewards Harrigan with the historic flintlock pistol, then departs. Harrigan acknowledges that the Predators will return, suggesting this was just one encounter in an ongoing cosmic conflict. The weapon gift may also indicate the Predators will seek revenge or test future human warriors.

The final scene mirrors the ending of the original Predator film, where Dutch also received the pistol and was told the Predators would return.

The forensic analysis revealing that the Predator's spear tip contains elements unknown to science establishes that the hunter is truly extraterrestrial. This confirmation pushes the investigation from a supernatural mystery into a first contact scenario. The unknown elements also explain why conventional human weapons and tactics fail against the creature, it operates on technology far beyond human understanding.

King Willie hints at supernatural forces before the forensic evidence confirms alien technology.