''Alien vs Ninja'' is a 2010 popcorn movie from director Seiji Chiba. When a "fireball" crashes near a ninja village a handful of Ninja are dispatched to investigate the issue.

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!!This film provides examples of:

* ActionGirl: Rin (TwoWords: "Mighty Strength")
* AllOfTheOtherReindeer: Yamata gets a mild case of this from a group of the village laborers, since he wasn't born into the clan. The other warriors respect him, though.
* BadassNormal: Ninjas
* BadassBookworm: Nezumi is a pretty good ninjas when he gets up the nerve to fight.
* BatmanCanBreatheInSpace
* BottomlessMagazines
* ConservationOfNinjutsu: The opening battle shows a single ninja taking out an entire pack of ninjas. Yamata is apparently GenreSavvy enough to use it to his advantage.
* CoolVersusAwesome: Read the title again.
* ClusterFBomb: In the climax, the ninjas in thrall to the alien chant "Fuck you!" repeatedly [[GratuitousEnglish in English]].
* DirtyCoward: Nezumi
* DoubleEntendre: Numerous visual examples. The aliens in general, as well as all the fight scenes, are ''exploding'' with sexual imagery
* ExactlyWhatItSaysOnTheTin: This movie isn't about pirates vs. zombies.
** It does feature [[spoiler: Alien-possessed zombie ninjas]] at one point though
* GangstaStyle: how [[spoiler: the alien]] uses the gun
* GratuitousEnglish: "You motherfucker. Give me the fucking dirty pussy. Fuck you! Fuck you!" It is clear from their reactions that neither Rin nor Yamata understand any of it and both are extremely confused by it.
* HelmetsAreHardlyHeroic: only mooks and [[DirtyCoward Nezumi]] wear helmets after the first scene
* {{Homage}}: The aliens are clearly based on the xenomorphs from Creator/RidleyScott's ''Franchise/{{Alien}}'' movies.
* InstantAwesomeJustAddNinja
* [[InterspeciesRomance Interspecies Rape]]: One of the aliens attempts to rape Rin. It regrets it.
* MoodWhiplash: Numerous examples but there are a few standouts [[spoiler: Netsumi returning to his home village only to see everyone dead and the alien advancing on him only to land on the roof, then promptly fall through it.]]
* MsFanservice: Rin.
* {{Ninja}}: They have no super powers but can leap hundreds of feet [[spoiler: and survive terminal velocity free falls]]
* NinjaPirateZombieRobot: [[spoiler: alien-controlled ninja zombies]]
* OurZombiesAreDifferent: [[spoiler: they come from alien parasites in your throat and can be cured by yanking them out.]]
* RuleOfCool: Lightning quick ''aliens'' land in Toyko to kill ''ninjas.''
* RuleOfFunny: Much of the movie is cut with the antics of Netsumi, a chicken of a Ninja who is a GadgeteerGenius and is the oldest/most experienced of the group.
* RuleOfScary: Lightning quick aliens land in Iga prefecture to kill ninjas.
* RuleOfThree: [[spoiler: Of the half dozen ninjas that set out only 3 survive.]]
* SpecialEffectsFailure: All ''over'' the place. [[NarmCharm It's a big part of the fun, though.]]
* VersusTitle