History WesternAnimation / Planet51

* AllAnimalsAreDogs: The aliens keep doglike [[{{Alien}} xenomorphs]] as pets.

* CallASmeerpARabbit: The aliens call their pet [[{{Alien}} xenomorphs]] "dogs."

* {{Expy}}: The Aliens' pets look like [[{{Alien}} Xenomorphs]] that are about the size of a toy poodle. They have a sucker mouth on a frog-tongue, instead of a second set of jaws, though.

** [[Film/{{Alien}} A pet "dog" named Ripley]].

** [[{{Terminator}} Chuck's televised]] [[Franchise/StarWars alien roleplaying]].

** Eckle hums a snippet of [[Franchise/StarWars''The Imperial March'']].

* PerspectiveFlip: A human astronaut is seen as an alien invader by most of the locals, with a few realizing that he actually a peaceful visitor.

* FunnyAccents: in the European Spanish dub, the aliens speak with Argentinian accents.

* RuleOfFunny: How likely is it that an alien civilization that has had little contact with Earth (and even that hasn't been revealed to the public) would evolve into a near-perfect duplicate of a specific human culture? And how likely is it that such a world would have a popular science fiction franchise called ''Humaniacs''? Who cares?

* RuleOfFunny: How likely is it that an alien civilization that has had little contact with Earth, which hasn't been revealed to the public, would evolve into a near-perfect duplicate of a specific human culture? And how likely is it that such a world would have a popular science fiction franchise called ''Humaniacs''? Who cares?

* SoundtrackDissonance: The advertisement for the film uses TheKillers' "Spaceman." The song is about being abducted by aliens and then being autopsied.

** [[TwoThousandOneASpaceOdyssey HAL 9000]] camera eye.

** Either that, or an acronym for Lunar Excursion Module. Or ''both''.

** The Tea Party cafe was called [[TheDayTheEarthStoodStill Nikto's]].

** [[{{Terminator}} Chuck's televised]] [[StarWars alien roleplaying]].

** When Humaniacs III's poster goes up, two of the cast make ''StarWars'' noises and reference ''Star Wars'' plots while talking about it.

** "Listen Kid...you are a kid, right? you're not like a thousand year old [[StarWars Yoda]]?"

* MadLaugh: Professor Kipple has one.

** When Humaniaces III's poster goes up, two of the cast make ''StarWars'' noises and reference ''Star Wars'' plots while talking about it.

** TertiarySexualCharacteristics: The female aliens have built-in, organic "high heels" on their feet. WordOfGod (aka character designer Ignacio Güejes, in the book ''The Art of Planet 51'') explains that this is because "we discovered that if the females had that extra heel on their feet, they would move differently than the male aliens, with swaying hips."

** The aliens can function without [[spoiler: a brain]], and might even be ''smarter'' that way. Which just leads to the question of why they think it's important, but...

** Also their hair looks like it´s a living part of their bodies, and lots of fanfics call it "feelers". How do they cut it?

* CannotSpitItOut: Lem has a hard time asking Neera out on a date. This is partially due to his own shyness, and partially because Glar is a MomentKiller who bursts into song whenever Lem is about to ask Neera out. [[spoiler:Technically, Lem never completes his question to Neera, because at the end of the film she says "yes" before he can finish.]]
* CityOfAdventure: Glipforg, the quiet little suburb where Chuck lands.

* GeneralRipper[=/=]InspectorJavert[=/=]WellIntentionedExtremist: General Grawl, leader of the soldiers hunting Chuck, is a combination of all of these tropes.

* HassleFreeHotwire: Chuck and Lem both do this. Lem {{lampshades}} it by explaining to Neera that hotwiring is "how they start cars on Earth."

* {{Keet}}: Eckle, a little boy who's positively enthusiastic about the prospect of invasion by brain-eating aliens.

* MindControl: The aliens believe that Chuck can do this. After all, isn't he an alien invader?

* RuleOfFunny: How likely is it that an alien civilization that has had little contact with Earth, which hasn't been revealed to the public, would evolve into a near-perfect duplicate of a specific human culture? And how likely is it that such a world would have a popular science fiction franchise called ''Humaniacs''? Who cares?

** The fact the main alien character's name is the last name of [[StanislawLem a known SF writer]] probably also counts.

* AliensSpeakingEnglish: [[{{Lampshaded}} "Hey, you speak my language!"]]

* HumansThroughAlienEyes: The premise of the film. YourMileageMayVary if it works, since the aliens and humans are so culturally similar.

** TertiarySexualCharacteristics: The female aliens have built-in, organic "high heels" on their feet. WordOfGod (aka character designer Ignacio Güejes, in the book ''The Art of WesternAnimation/{{Planet 51}}'') explains that this is because "we discovered that if the females had that extra heel on their feet, they would move differently than the male aliens, with swaying hips."

** TertiarySexualCharacteristics: The female aliens have built-in, organic "high heels" on their feet. WordOfGod (aka character designer Ignacio Güejes, in the book ''The Art of Film/{{Planet 51}}'') explains that this is because "we discovered that if the females had that extra heel on their feet, they would move differently than the male aliens, with swaying hips."

* HumansThroughAlienEyes: The premise of the film.