->''My name is Buzz Lightyear, I come in peace.''
-->-- '''Buzz Lightyear''', ''WesternAnimation/ToyStory''

Okay, so you've had your [[FirstContact first encounter with an alien race]]. They don't seem hostile, and might even be friendly. So, how do you let them know you don't want to hurt them?

You say hello. You tell them you don't want to hurt them. The classic way to do this, of course, is with the [[StockPhrase old standby]] of "I Come in Peace", but other greetings may be offered. If all goes well, diplomatic relations might be established. If not, well...

This can happen in reverse, of course, with the alien race indicating their peaceful intentions this way. If a character uses the specific phrase, it can overlap with IAlwaysWantedToSayThat.

Of course, this can be subverted, with a visitor indicating peaceful intentions just before slaughtering the PunyHumans. Or the peaceful party getting mauled by the non-peaceful party. Or a suspicious member of one group or the other might still be convinced that the visitors are dangerous. Or whatever.

WeComeInPeaceShootToKill is another name for aversions of this trope. Compare TakeMeToYourLeader. If the characters start out with numbers instead of language, it's FirstContactMath.

This trope is an important part of HowToInvadeAnAlienPlanet.

!! Examples:
!!!Played Straight

[[AC:Fan Works]]
* ''Captain Proton and the Planet of Lesbians''.
-->"They said they came while pissed with their planet's dirt," explained Princess Aylarna.\\
"I said I came in peace from the planet Earth!" said Proton.

* In ''Film/{{Explorers}}'', one of the young heroes greets an alien with "We come in peace", because it seems like the right thing to do. The alien, in turn, replies, "[[Characters/BugsBunny Ehhh, what's up, doc?]]"
* In ''Film/TheAbyss'', Bud Brigman tries a more casual approach when confronted by aliens: "Howdy. Uh... How are you guys doin'?"
* In ''Film/IndependenceDay'', the government sends military choppers displaying greetings in all the languages of the world. It ends badly.
* The alien beings in ''Film/CloseEncountersOfTheThirdKind'' take the time to teach the Earthlings a [[FirstContactMath tonal language]] as a gesture of greeting.
* ''Film/StarTrekFirstContact'' has the Vulcans greeting humanity with their customary "Live long and prosper".
* In ''Film/{{Predator 2}}'', a young boy encounters the cloaked Predator and is nearly shot before it recognizes that his plastic machine gun is only a toy. The kid's response? "Want some candy?"

* In the book ''AliensAreComing'', the final interview concludes with a person saying "And if an alien spaceship ever DOES land in my backyard, I hope I will have the good sense to invite the occupants inside for tea."

* In ''Series/StargateSG1'':
-->'''Jack O'Neill:''' We come in peace. We hope to leave in one... piece.
** Also, Daniel's usual operating procedure: 'We're peaceful explorers'. And if it's a language he doesn't understand, probably [[TastesLikeFriendship sharing food]].

* In possibly the oddest straight use ever (and possibly a StealthParody), the player-character in ''VideoGame/{{Homeworld}}: Cataclysm'' quotes the trope word-for-word... whilst trying to convince the setting's resident SpacePirates to [[StrangeBedfellows help you take on the monster that's clobbered you and them both.]] [[spoiler:It doesn't turn out very well, to say the least.]]
* The first Vahnatai you meet in ''{{Avernum}} 2'' (in the flesh, at least) uses this line nearly word-for-word--however, she's not quite fluent in English, and it comes out as "peaceness" instead.
* In ''VideoGame/AnotherWorld'', the protagonist tries to greet the aliens with a smile and an open palm. This didn't end well - he got zapped and put into a cage. One can assume he unwittingly [[NonverbalMiscommunication flipped the aliens off]].

* An episode of ''{{Rugrats}}'' has the kids exploring the house during a power failure, looking for a monster which turns out to be a rat. Tommy greets it with "We come in peace."
* ''ThePenguinsOfMadagascar'' greet a cat when they think they've landed on the moon this way: "We come in peace. For now."
* In one episode of ''WesternAnimation/GreenLanternTheAnimatedSeries'', Hal greets a group of aliens this way. He then remarks to Kilowag that [[IAlwaysWantedToSayThat He Always Wanted To Say That]], to which Kilowag asks, [[PopCulturalOsmosisFailure "Why?"]]

[[AC: Real Life]]
* The last line said on the Moon was:
-->"We leave as we came, and as we shall return. In peace for all mankind."
** They also left a plaque that said: Here "Men From The Planet Earth First Set Foot Upon the Moon, July 1969 A.D. We Came in Peace For All Mankind."
* The 1980s/90s UK prank show ''Beadles About'' had a famous and very elaborate hoax involving dozens of actors and extensive special effects to convince a women that an alien had landed in her back yard. On finally seeing the alien emerge from the saucer, her first words to what she genuinely believed to be an alien were, brilliantly, "Do you want a cup of tea?"


[[AC: {{Comics}}]]
* In one early ''ComicStrip/{{Dilbert}}'' strip, Dilbert discovers a microscopic civilization. After saying the line, he decides to adjust the lens of his scope...[[MikeNelsonDestroyerOfWorlds and ends up crushing the tiny world.]] Dogbert's comment on the event? "I loved the part where you said 'I come in peace.'"

[[AC:Films -- Animated]]
* ''WesternAnimation/MonstersVsAliens'' subverts it from both sides:
** B.O.B. to the alien probe: "Welcome! We are here to destroy you!"
** Gallaxar delivers an "I Come in Peace" speech that goes [[DissonantSerenity horribly wrong:]]
--> '''Giant Holographic Head of Gallaxar:''' [[PunyEarthlings "People of Earth!]] I am Gallaxar. [[BlatantLies You need not fear me; I mean you no harm.]] However, it is important to note that most of you will not survive the next forty-eight hours. Those of you who '''do''' survive will be [[FateWorseThanDeath enslaved and experimented on.]] So, in summary - [[ExactWords I come in peace]]; [[HypocriticalHumor mean you no harm]]; and [[ApocalypseHow you all will die]]. Gallaxar out."
** ''MonstersVsAliens'' also had a shout out to ''Film/CloseEncountersOfTheThirdKind'' with the US President trying to establish peaceful contact with the alien probe by playing music. After using the Vulcan greeting gesture.
*** Apparently, alien robots don't appreciate movie theme songs.

[[AC:Films -- Live-Action]]
* ''Film/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.
* In ''Film/MarsAttacks'', the Martians' translator indicates that they are all shouting "We come in peace! We come in peace!" as they're blowing everything to kingdom come.
* In the ''Film/IndependenceDay'' example, a rooftop full of people holding up welcoming signs to the 15-mile-wide saucers are the first to be annihilated on-screen. Hilariously, earlier in the movie a news item is shown on TV warning the people of L.A. not to fire their guns at said ships, to avoid accidentally sparking an interstellar war.
** An interesting variation later on comes at the end of an action-packed dogfight between some fighter jets and some alien fighter ships, culminating in the immortal line:
--->'''Captain Steven Hiller:''' [punches the alien in the head] Welcome to Earth!
* This type was also used in the novel and [[Film/TheWarOfTheWorlds1953 1953 movie]] of ''Literature/TheWarOfTheWorlds''. The humans greet the aliens waving white flags, and are promptly zapped to a crisp.
* In both ''Film/TheDayTheEarthStoodStill1951'' and it's [[Film/TheDayTheEarthStoodStill2008 2008 remake]], [[MessianicArchetype Klaatu]] steps out of his ship in the presence of roughly half the U.S. military, who are already a bit jumpy on account of the aforementioned spaceship. He [[PoorCommunicationKills wordlessly thrusts an alien device in their direction]] (actually trying to offer a gift), and somebody twitches and shoots him.
* The Xilians in ''Film/InvasionOfAstroMonster'' and ''Film/GodzillaFinalWars'' start off with a show of generosity to Earth before trying to take over, preferably with {{kaiju}}.

* In ''Series/{{V 2009}}'', the Visitors' catchphrase is "We are of peace, always." Guess what? They aren't.
* In the ''Series/BabylonFive'' TV movie ''In The Beginning'', Captain Jankowski's expedition to covertly investigate the Minbari [[EpicFail stumble across a Minbari fleet carrying their central governing council]]. During the [[FirstContact ensuing encounter]], Jankowski orders that a signal be sent assuring the Minbari that they come in peace. Unfortunately, [[AliensSpeakingEnglish the Minbari can't understand English]] and the situation degrades further from there due to [[NobodyEverComplainedBefore compounding cultural misunderstandings.]]
** On the other hand, Earth's first contact with the Centauri went over much more smoothly, with Earth's technology base receiving a substantial boost due to the new interstellar trade. It helped that the Centauri Republic's initial policy was that Earth was a lost Centauri colony (Earth wasn't, and the Centauri claim it was an honest mistake. The Humans are somewhat doubtful on that matter.)

* The Firm's "Star Trekkin'" on Captain Kirk's verse:
-->''Ah, we come in peace''
-->''Shoot to kill, shoot to kill, shoot to kill''
-->''We come in peace''
-->''Shoot to kill, shoot to kill, men''

* ''VideoGame/RatchetAndClank: A Crack In Time'' has Dr. Nefarious's robots telling the eponymous characters that they come in peace, and that they might go have some pie or take in a holofilm together. These are robots that tend to be shooting at the characters as they say this.
** "Mr. Zurkon", a floating robot that defends the player (and is a weapon in his own right) perhaps lampshades this by proclaiming that "[[ThirdPersonPerson Mr. Zurkon]] does not come in peace."

[[AC: Web Comics]]
* Upon the party encountering a giant in ''LookingForGroup'':
--> '''Cale:''' Explain our noble intentions!\\
'''Richard:''' Will do. I mean you harm.\\
'''Cale:''' NO harm! You mean him NO harm!\\
'''Richard:''' [[SociopathicHero That doesn't sound like me.]]

* In one episode of ''GarfieldAndFriends'', Garfield and Jon are watching a BMovie about aliens, and [[LampshadeHanging making fun of the fact]] that the aliens ''always'' announce "We come in peace" in these types of movies. Then a real alien lands in their front yard, announcing that he comes in peace, at which point Garfield [[BreakingTheFourthWall turns to the audience]] and says, "Wow, they really do say that." Eventually, it turns out that the alien doesn't come in peace at all, as he's actually the spy for a hostile invasion force.