[[caption-width-right:250:[[IncrediblyLamePun ...But you'll leave in pieces.]]]]

''I Come in Peace'' (1990) (released and known worldwide as ''Dark Angel'') is a science fiction action thriller film about a [[CowboyCop rule-breaking vice cop]] who becomes involved in the investigation of a number of mysterious drug-related murders on the streets of Houston, Texas. The film was directed by Craig R. Baxley, and stars Creator/DolphLundgren, Brian Benben, Betsy Brantley and David Aykroyd.

Jack Caine (Lundgren) is a Houston cop who is determined to wipe out the White Boys, a gang of white-collar drug dealers who killed his partner while Caine was waylaid stopping a convenience store robbery. Little does he know that there is a new drug dealer in town, one who preys on heroin addicts in order to get his own drug of trade - made from the endorphins extracted from heroin users. But this guy's home turf isn't in Houston. It isn't even on planet Earth...
!! This movie contains examples of:

* AlienBlood: The aliens bleed a blue clay-like substance.
* AlmostDeadGuy: After the alien drug dealer mortally wounds the [[SpacePolice space cop]] who was pursuing him, the good one survives just long enough to tell Jack and Larry about the drug dealer's plans and give them his energy gun.
* AssholeVictim: The gangsters the bad alien kills to steal their drug.
* {{Badass}}: Jack Caine and the aliens, both the evil and the good one.
* BadassLongcoat: The aliens wear these.
* {{BFG}}:
-->'''Jack Caine:''' [while being chased by the White Boys, Larry produces a huge firearm, which resembles a cannon more than a gun] What the hell is that? \\
'''Arwood "Larry" Smith:''' A Christmas present from my mother.
* BigBadEnsemble: Victor Manning and the alien criminal. However since the former disappear just after his only on-screen scene, we could consider the alien the true BigBad.
* BlatantLies: "I come in peace..."
* BlondGuysAreEvil: The alien drug dealer. Especially as the alien cop also after him (presumably the same species) is black-haired.
* BrainFood: The evil alien injects humans with overdoses of heroin in order to harvest endorphins that could be rendered into a powerful recreational drug on his home planet.
* CarCushion: The alien throws Smith into a car. Despite being dropped from a considerable height, he only hurts his shoulder.
* CoolGuns / RareGuns: The "alien guns" are actually Calico M-950s with an additional LED toggle display on the side (apparently showcasing various power levels-the higher one good at making StuffBlowingUp and turning people into LudicrousGibs).
* CowboyCop: Jack Caine prefers to play by his own rules, but this does get him into a lot of trouble at the start. The only reason he isn't booted off the force is because the FBI agents pull some strings.
* DeadlyDisc: The alien shoots small magnetically-powered disks that ricochet around the room and home in on humans' electrical patterns.
* EvilGloating: Victor Manning, the drug lord who killed Jack Caine's partner in the opening, later sends Jack a photo of himself with some half-naked girls to show that he's having a great time on his vacation in Brazil.
* FalseReassurance: Caine is smart enough to warn Larry that if his boss starts being chummy and talking about how good he's been at serving his country, [[HeKnowsTooMuch Larry should start to worry]]. And so he does, [[OhCrap and Larry does too]].
* FantasticDrug: The alien drug "collector" overdoses humans with stolen heroin so he can extract endorphins from them for sale off-world.
* GroinAttack: Threatened when Jack interrogates one of Victor Manning's associates by pressing his gun against the guy's crotch.
* HandCannon: The alien's weapons look like regular handguns. But when shot, [[StuffBlowingUp HUGE explosions]] ensue.
* HeKnowsTooMuch: Larry's FBI boss tries to kill his subordinate after Larry hands over the energy weapon which he retrieved from the alien cop, but Larry's local partner Jack saves him by shooting the guy first.
* HyperDestructiveBouncingBall: The alien uses a sawblade-like disk which does this quite memorably, until caught (attracted?) mid-flight with a strong magnet.
* IComeInPeace: Subverted. The main alien says this to the Earthlings almost out of reflex, but in reality he wants to steal their brain fluid for the intergalactic drug trade.
* IGaveMyWord: It's a recurring plot point that Jack Caine always keeps his promises when he does make one. The alien cop seems to be aware of this reputation, since when he is dying, he also makes Jack promise to stop the alien drug dealer before he can kill even more people.
* ItsPersonal: Caine was already going after the [=WhiteBoys=], but then they had to go and kill his partner...
* KarmaHoudini: Victor Manning, getting out of Dodge after his one scene and sending a picture to Caine in order to gloat about it. On the other hand, the complete slaughter of his gang back on Houston is going to make things harder for him in the long run...
* LetsGetDangerous: Larry has a moment like this when he and Jack get ready for their climactic showdown with the alien.
-->'''Larry:''' Let's kick some ass.
* TheMenInBlack: After the two aliens have a shoot-out in a convenience store, the crime scene is quickly cordoned off by these people and the case closed. It's implied that Larry's boss is one of them, as he reveals that they want to make a deal with the alien and ignore how many he's already killed on Earth.
* NameOfCain: Jack Caine, who is a CowboyCop AntiHero who frequently flouts protocol.
* NoBiochemicalBarriers: Human endorphins work on alien brain chemistry. Unless there's a PlaceboEffect involved...
* OutsideContextVillain: The alien drug dealer arrives in the middle of a botched sting operation to kill the human gangsters. Later, he kills more of them [[VillainousRescue when they arrive to kill protagonist Jack Caine]].
* PickyPeopleEater: The alien drug dealer harvests brain fluid from Earthlings that can be rendered into a powerful recreational drug on his home planet.
* PoweredByAForsakenChild: The alien drug dealer collects his narcotics by injecting humans with heroin before using a spike to extract the endorphin-laden brain fluid.
* ThePreciousPreciousCar: When Jack is playing Chicken with some White Boys (all of whom drive expensive sports cars), Larry is worried at first, but Jack knows he'll win because "if there's one thing a White Boy can't stand, it's a scratch on his car".
* PreMortemOneLiner: After the evil alien has been impaled on a pipe:
-->'''Bad Alien:''' [[TitleDrop I come in peace]]. \\
'''Jack Caine:''' But you go in pieces, asshole.
* ProphetEyes: The aliens have white eyes.
* ScrewTheRulesImDoingWhatsRight: Caine already lives by this code, but Larry grows into it once he finds out that the government has no problem with letting the alien kill people (and possibly bring along an AlienInvasion to turn Earth into a space-meth lab) as long as they can get a deal out of it.
* SlasherSmile: The bad alien during the fight with Caine at the climax.
* SpacePolice: Another alien turns out to be a law enforcement officer who gives NotQuiteDead exposition on the alien drug dealer's reason for being on Earth.
* TheSpeechless: The evil alien. Exepct for his CatchPhrase "I come in peace", doesn't talk very much,
* SuperToughness: The two aliens are much tougher than ordinary humans. The cop still lives for quite a while after half his torso is shot off, and the drug dealer isn't even phased when Jack tries to kick his ass, while gunfire barely slows him down.
* TitleDrop: Unless seeing it as ''Dark Angel'', multiple repetitions of "I come in peace" make up almost all of the bad guy's dialogue (his only other line: "I win").
* TerminatorTwosome: An alien cop does show up to hunt down the alien criminal, but he turns out to be the TheWorldsExpertOnGettingKilled and gets gutshot pretty quickly. His only real contribution is giving Jack an alien gun before he dies and explodes.