History NeverTrustATrailer / AnimatedFilms

** The trailer for the movie also makes it seem as though ''The Fairly Odd Parents'' creator Butch Hartman is responsible for the movie's conception, even though ''Doogal'' is merely the US edition of the movie adaptation of the UK television series ''The Magic Roundabout'' (the trailer makes no reference to this, either).

* The ''WesternAnimation/MonstersInc'' teaser features Mike and Sully stuck in the wrong kid's room. Mike's job in the movie doesn't have him enter the room, he just collects and records the scream energy Sully generates. Also at one point in the teaser, Mike picks up the kid's hula-hoop and pretends to be a planet. In the finished movie, children and anything they touch are thought to be toxic to monsters, and Mike is terrified just as much as anyone else when Boo first emerges.

* All of the trailers for ''WesternAnimation/KungFuPanda1'' made it out to be a slapstick, comedic parody in the same vein as most of [=DreamWorks'=] animated features. Granted, this could be excused by the fact that the title character is voiced by Jack Black - but considering his usual style of acting and choice in film roles, this would seem to be a very strong example of this trope twice over. Most fans of Jack Black's usual work would not go to see him in an animated feature, and most parents would not want their kids to see an animated feature which starred Jack Black. In any case, the movie instead turned out to be a pretty serious, epic action film with almost mythic proportions at times. The comedy was all still there, but spaced out and used as comic relief to lighten the tension. Which means people coming to the film solely for Jack Black comedy were probably disappointed, and those who might have enjoyed the action never got a chance to see it because they were driven away by the trailers.

* All of the trailers for ''WesternAnimation/KungFuPanda1'' made it out to be a slapstick, comedic parody in the same vein as most of [=DreamWorks'=] animated features. Granted, this could be excused by the fact that the title character is voiced by Jack Black - but considering his usual style of acting and choice in film roles, this would seem to be a very strong example of MisaimedMarketing twice over. Most fans of Jack Black's usual work would not go to see him in an animated feature, and most parents would not want their kids to see an animated feature which starred Jack Black. In any case, the movie instead turned out to be a pretty serious, epic action film with almost mythic proportions at times. The comedy was all still there, but spaced out and used as comic relief to lighten the tension. Which means people coming to the film solely for Jack Black comedy were probably disappointed, and those who might have enjoyed the action never got a chance to see it because they were driven away by the trailers.

--> '''Mo's Mom:''' Hey, Mo, did you like the movie, sweetie?"

--> ''Mo's Mom:''' Hey, Mo, did you like the movie, sweetie?"

* [[https://www.youtube.com/watch?v=NkCaoca_BOY This commercial]] for ''WesternAnimation/{{The Little Mermaid|1989}}'' advertises the film as basically "Triton vs. Ursula", and takes moments from arguably the scariest scene in the film, when Triton destroys Ariel's collection of human treasures, and puts them in a heroic context, making it look like he's firing his trident at Ursula instead.

* [[https://www.youtube.com/watch?v=NkCaoca_BOY This commercial]] for ''WesternAnimation/{{The Little Mermaid|1989}}'' advertises the film as basically "Triton vs. Ursula", and takes scenes from arguably the scariest part of the film and puts them in a heroic context.

** One poster of the film makes Napoleon look like the main character, featuring him posing beneath the headline "He's got the world in an uproar!"

** The teaser for didn't even show anything about the story or even our two female leads of Anna and Elsa. Instead, it was a quick one-to-two-minute gag involving Olaf (the snowman Elsa creates that she unknowingly brings to life) sneezing his carrot nose off and trying to keep Kristoff's reindeer Sven from getting it. Later trailers continued to overplay how much of a part Olaf had in the movie, often focusing on his jokes and slapstick over anything resembling the Anna+Elsa plot. The actual film turned out to be about a lot more than just Olaf's wacky antics. The excessive focus on Olaf is parodied by [[https://www.youtube.com/watch?v=bkixuYFQWaU this fake trailer]] (made by WebVideo/{{Seinfeldspitstain}} of ''WebAnimation/JimmyNeutronHappyFamilyHappyHour'' fame) that consists only of an ever-increasing number of [[StylisticSuck poorly-made 3D-Olafs]] repeating "See the Frozen Snowman Comedy in theaters", and adds the subtitle "Snowman Comedy" to the movie.

** The teaser trailer shows Ember having a MeetCute with Wade by bumping into him on the train, with a shared look implying LoveAtFirstSight. In the actual movie, she never even leaves Firetown before meeting Wade, they meet by accident when he gets sucked into her father's shop's pipes, and she does ''not'' have a good first impression of him since he threatens to shut down the shop. The actual trailers did show this scene to make their actual meeting clear, however,

* Trailers for ''WesternAnimation/Elemental2023'' suggested that the movie was going to be a look at racism through a fantastic lens ala ''WesternAnimation/{{Zootopia}}'', with trailers playing several lines out of context to suggest that the elements live in isolation from each other and one trailer featuring Ember's mother loudly enforcing that "ELEMENTS CANNOT MIX!". The final movie plays these themes more subtle and the element people in the present day are shown to be generally accepting of each other outside of occasional squabbles, though flashbacks show they were less tolerant in the past, leading to the grudge Ember's father has toward other elements, especially water, in the present day. Ember's mother is shown to be relatively more tolerant of the other element people than her husband, never once saying that elements cannot mix and [[spoiler:immediately accepting that Ember is in love with Wade, a water person, once she has all the proof she needs that they are in love with each other]]. The movie is overall more about Ember venturing out into the big city for the first time after living in her immigrant community all of her life to save her father's shop and the culture shock that ensues, [[JourneyToFindOneself finding herself]] and falling in love in the process.

* There's the 1954 animated movie version of Orwell's ''Literature/AnimalFarm'' which faithfully follows the novel, and the 1999 version that, more or less, still faithfully follows it. [[https://www.youtube.com/watch?v=YGCo5Tva39s One trailer]] makes it look much like ''Babe'', whereas another gets the drama tone down right.

* ''WesternAnimation/TheSuperMarioBrosMovie'': In the first trailer, Mario says "Mushroom Kingdom, here we come!" as he and Toad make their way over the mushrooms to Peach's castle. In the movie, he never says this line.