History WesternAnimation / Planet51

* ABoyAndHisX: [[spoiler:Skiff eventually adopts Rover as a pet.]]
** [[spoiler:And the xenomorph "dog" stows away with Chuck as he departs.]]

** [[HalfDressedCartoonAnimal Half Dressed Cartoon Alien]]: The male aliens don't wear pants, either, in a variation on PantslessMalesFullyDressedFemales.

* BrainFood: The Planet 51 natives believe that the humans eat brains.

* ProductPlacement: At one point Chuck pulls a Twix bar out to convince Lem to clear the way to his ship. [[note]]It's not actually uncommon for any kind of explorer to take a supply of chocolate with them, because its high callorie count allows an average person to keep their hunger in check even in small quantities (no matter if it's an M&M's packet or a Toblerone bar), and it also takes a long time to rot (it may melt depending on circumstances, but that doesn't render it inedible).[[/note]] Professor Kipple later finds the discarded wrapping and interprets it as being a death threat in alien language (while the barcode would be the surrender terms).

** Chuck as Chuck Yeager.

** "I was supose to plant Old Glory, head back to the Kids Choice Awards...I was supposed to get slimed!"

With a 21% rating on RottenTomatoes and a story that wastes opportunities with every cliche it parodies, the enthusiastic presence of [[Creator/DwayneJohnson Dwayne Johnson]] as the voice of Chuck Baker turns what would otherwise be a rather pathetic flop into something that is relatively bearable viewing.

** TertiarySexualCharacteristics: The female aliens have built-in, organic "high heels" on their feet. 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."

** 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."

* KnowNothingKnowItAll: Professor Kipple claims to know everything about humans but he believes they mind control powers and when he finds the wrapper for the Twix, he claims that it is deceleration of war clearly because he cannot read a single word.

* {{Sequelitis}}: Parodied InUniverse by ''Humaniacs III'', a [[ShowWithinAShow movie within the movie]] that happens to be opening when Chuck lands. The franchise is about alien invaders, of course.

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

With a 21% rating on RottenTomatoes and a story that wastes opportunities with every cliche it parodies, the enthusiastic presence of [[Creator/DwayneJohnson]] as the voice of Chuck Baker turns what would otherwise be a rather pathetic flop into something that is relatively bearable viewing.

With a 21% rating on RottenTomatoes and a story that wastes opportunities with every cliche it parodies, the enthusiastic presence of {{Creator/DwayneJohnson}} as the voice of Chuck Baker turns what would otherwise be a rather pathetic flop into something that is relatively bearable viewing.

With a 21% rating on RottenTomatoes and a story that wastes opportunities with every cliche it parodies, the enthusiastic presence of DwayneJohnson as the voice of Chuck Baker turns what would otherwise be a rather pathetic flop into something that is relatively bearable viewing.

* RidiculouslyCuteCritter: Rover is one of the cutest robots ever.

** [[Film/SinginInTheRain Rover's dance]].

** The army skip past contingency plans for [[Film/{{Them}} giant ants]], [[Film/TheBeastFromTwentyThousandFathoms Sea Monsters]] and [[Film/AttackOfThe50FootWoman 50-foot women]] while trying to find one for alien invaders.

** The army skip past contingency plans for [[Film/{{Them}} giant ants]], [[Film/TheBeastFrom20000Fathoms Sea Monsters]] and [[Film/AttackOfThe50FootWoman 50-foot women]] while trying to find one for alien invaders.

** One of the aliens' contingency plans is for [[Film/AttackOfThe50FootWoman an attack by a 50-foot woman]].

* GenreSavvy: [[WrongGenreSavvy for all that he thinks Chuck is there to invade Planet 51]], General Grawl does realize that such an effort would be carried out by the military, whose members would carry something that points out towards their origin. [[spoiler:This allows him to find Chuck in the middle of a crowd disguised in similar disguises, as Chuck's is the only one that has an US flag patch.]]

* AllPlanetsAreEarthlike

* WhoEvenNeedsABrain: Once two alien soldiers have their brains removed not only do they still function but actually seem to get ''smarter'' such as speaking in SesquipedalianLoquaciousness.

** That last thing ''may'' be [[GettingCrapPastTheRadar a reference to]] ADateWithRosiePalms.
*** ''This troper'' assumed diarrhea or vomit, which "number three" is most often intended.

* InhumanableAlienRights: Inverted, since Chuck is the one who might be victimized. But only from a human perspective. It may very well be played straight, since technically Chuck is an "alien" while on the planet.

* InhumanableAlienRights: Subverted, since Chuck is the one who might be victimized.
** Inverted only from a human perspective. It may very well be played straight, since technically Chuck is an "alien" while on the planet.