History Film / MenInBlack3

** Music/LadyGaga, Yao Ming, Music/JustinBieber, David Beckham, Creator/TimBurton and UsefulNotes/RichardNixon are aliens; Gaga living under her given name.

* YouCantFightFate: When asked whether there exists a timeline where J successfully saved K's life, Griffin affirmed there is, but also cryptically pointed out "Where there is death, there will always be death". In the end, J found out that [[spoiler:his own father died in place of K, resulting in K secretly keeping watch over the younger J, invoking a StableTimeLoop]].

* SerialEscalation: Each of the preceding MIB films have had the fate of the planet and the universe hanging in the balance should J and K fail to stop the BigBad. This still holds true with this film. But, befitting J and K's last adventure, the stakes are now higher than they've ever been before in the franchise. [[spoiler: This time, it's not just the planet or the universe, but history itself should Boris succeed.]]

** A black man achieving the rank of Colonel, without any apparent resentment or prejudice in ''Florida, 1969?'' Yeah, [[PoliticallyCorrectHistory good luck with that.]]

* BeatWithoutABut: When Kay delivers a eulogy for Zed during his funeral, he lists all the things Zed never did with him before making a pause, making it look that he's about to say something positive in the end... But no, he only says "Thank you" and leaves, much to Jay's dismay.
-->'''Kay:''' I worked with Zed for over forty years, and in all that time he never invited me to dinner. He never asked me to his house, or watch a game. He never shared a single detail of his personal life. ''(pause)'' Thank you.

* DoorFocus: In the scene with Griffin, an alien who [[TheOmniscient observes multiple future timelines as they're about to happen]], [[BlessedWithSuck but doesn't know which one will actually happen until it becomes the present]]. As Jay and Kay ask him if he knows that [[BigBad Boris the Animal]] is out to kill him...

* BerserkButton: Boris the Animal has one. It's '''just''' Boris. [[NoIndoorVoice NOT BORIS THE ANIMAL!!!]]
** And STOP STARING AT HIS ARM!!

The film also stars Creator/JoshBrolin as the younger K, Creator/MichaelStuhlbarg as Griffin and Creator/EmmaThompson as Agent O.

* AluminumChristmasTrees: One of the "alien creatures" in the Chinese restaurant is a real creature called a blob fish.

* EverythingsBetterWithDinosaurs: A ''T. rex'' appears during the time jump sequence.

* AlienLunch: J and K investigate in a Chinese restaurant ''for aliens''. They find who they're looking for, along with a bunch more they weren't.

* YouCantFightFate: When asked whether there exists a timeline where J successfully saved K's life, Griffin affirmed there is, but also cryptically pointed out "Where there is death, there will always be death". In the end, J found out that [[spoiler:J's father died in place of K]].

* RightForTheWrongReasons: While J is in time to 1969, he gets pulled over by two racist cops who believe that he stole the car he's driving because it happens to be a very expensive model (and J is of course black). After Neuralyzing them, J admits to the stupefied cops that he ''did'' steal the car, but it had nothing to do with the color of his skin.

* PlotArmor: The protagonists of course don't die, but J gets an especially jarring case during the final showdown when Boris' spikes, which so far dealt out {{One Hit Kill}}s to anyone they hit, merely mildly inconvenience him despite four hits to his body (to be fair, K doesn't sustain hits to any immediately fatal areas such as his head or heart).

* LaserGuidedAmnesia: Two prototypes of the Neuralyzer exist in 1969: the giant one that J is locked into, and a smaller one with a battery attached to K's belt (which for some reason has a ''dial-up modem''). Also if you listen carefully, the "modem" makes an AOL chime.

* DeliberateValuesDissonance: The 1969 MIB resembles a sci-fi version of the set from ''Series/MadMen'', including female agents working as secretaries. Chief X is also clearly speciesist by not caring if an alien got himself killed, as long as no human got hurt. The moment that J steals a nice car, he is ''[[TruthInTelevision immediately]]'' pulled over by two racist white cops.

*** In the scene where Jay goes to Kay's apartment, he's greeted by a woman who has a lot of kids. She's played by the same actress who portrayed the waitress in the the second movie, whom T told to marry and have a bunch of kids with.

* FictionalGenevaConventions: When O tells Jay that Kay was killed in 1969, and that he's suffering the effects of a messed up TemporalParadox, she reveals that soon after it was invented, [=MIB=] successfully lobbied for TimeTravel to be made illegal all over the universe.

* GuiltFreeExterminationWar: At the end of the movie, when Jay asks Kay about Boris "the Animal," [[spoiler: Kay says he killed him in 1969; when Jay asks about the other Boglodites, Kay answers that they went extinct decades before, which Jay is very pleased to learn.]]

** Boris is also similar to Agent Alpha from the animated series, a PsychoPrototype who K knew in the past, fired spikes, and required Jay's help to take him down.

* NoodleIncident: Jay telling Kay about finding out "too late" that all models are aliens.

* SpaceWhaleAesop: Jay uses these as part of his neuralyzer cover stories: "You don't turn off electronics on a plane when told to, crashed satellite." "Flush a live goldfish, fish monster."

** Frank's nowhere to be seen, aside from a couple of references (a picture of him hanging on Jay's wall, and a sign advertising the Amazing Talking Pug at Coney Island). Frank's "actor"[[note]]Specifically, the dog, Mushu; his voice actor Tim Blaney is still alive[[/note]] died, necessitating his disappearance.

** Hinted at. J doesn't like being called a dumbass in some dialogue reminisicent of ''Film/{{Hancock}}''.

* AlternateTimeline: In which K was killed in 1969, allowing the invasion of the Earth by the Boglodites, with no [[DeflectorShields Arknet Shield]] to stop them.

* AlwaysChaoticEvil: The Boglodites are pretty much this. They wipe out whole races, feed on the corpses for nutrition. Then move on to the next populate World to continue the cycle. In fact they burn off so much energy moving on to the next World, all it takes is a planetary shield preventing them from feeding pretty much ends them via starvation.

** [[spoiler:The Colonel says "that's some next-level stuff" as the Arknet Shield is deployed. J said "there's some next-level shit" when getting on the elevator as he returned to officially join up in the first film]].

* SpannerInTheWorks: Boris' plan to kill K and alter history to restore the Boglodite race ''would'' have worked and the MIB would have had no way of knowing what he'd done . It only fails because Boris didn't know that [[spoiler: a Stable Time Loop was in play and that J, having witnessed the event, would be protected from the ripple effect and would follow Boris back.]]