[[AC: Cross Series]]
* ExecutiveMeddling: Tons and tons and tons, relating to marketing and the usual reasons. For example: the GrandFinale to Simon Furman's MythArc comic series was cut from 12 issues to 4 so that IDW could publish ''All Hail Megatron'' instead.
* Once per series:
** Optimus Prime learns how to fly: G1, Beast Wars, Cybertron, Animated, Revenge of the Fallen, Prime
** Optimus Prime dies (usually sacrificing himself, and usually coming [[BackFromTheDead back]]). In fact, this happens ''so'' [[http://tfwiki.net/wiki/The_many_deaths_of_Optimus_Prime often]], it's easier to list the series where this ''doesn't'' happen: Anime/TransformersRobotsInDisguise (though it nearly happens in the last episode) and ComicBook/TransformersShatteredGlass (where, since it's a MirrorUniverse, this happens to Megatron instead).
** Megatron becomes Galvatron: G1, Robots in Disguise, Unicron Trilogy (and we mean ''every subseries'' of the Unicron Trilogy[[note]]Done for trademark reasons, according to Aaron Archer. It wasn't as much of an issue in Japan: ''Armada'' Megatron/Galvatron was ''Micron Legend'' Megatron/Megatron SuperMode; ''Energon'' Megs/Galv was ''Super Link'' Galvatron/Galvatron General; and the ''Cybertron'' version was ''Galaxy Force'' Master Megatron/Master Galvatron - Takara didn't originally intend for ''Galaxy Force'' to be in the same continuity.[[/note]]), Age of Extinction, Shattered Glass
*** A technicality with Prime- Megatron is resurrected and given an upgraded body by Unicron, the standard Galvatron origin, but he's never referred to as such. A single toy of this form just called it "Unicron Megatron"
** Starscream comes back from the dead: G1, Beast Wars, Unicron Trilogy, Animated
** Waspinator blows up: Beast Wars, Beast Machines, Animated
** Someone makes an evil Optimus clone: G1, Robots in Disguise, Energon, Beast Wars Second, Prime, Age of Extinction [[note]]When the humans in Age of Extinction make Galvatron, they specifically say that they're designing him to look like Optimus Prime; Galvatron keeps reprogramming himself to resemble his old body. He keeps Optimus' truck vehicle form though.[[/note]]
** Unicron Appears: G1, (technically)Beast Wars, Armada, Energon, Prime, Beast Wars Neo
** Transformer with a human for their alternate mode: Masterforce, [[spoiler: Animated]], Revenge of the Fallen.
* If you were to play every ''{{Transformers}}'' opening theme ever made back to back, it would take just shy of 40 minutes to complete.
* AdaptationOverdosed: The AdaptationSequence below speaks for itself.
* AdaptationSequence: Toys --> [[Comicbook/TheTransformers Comic]] --> [[WesternAnimation/TheTransformers Cartoon]] --> [[WesternAnimation/TheTransformersTheMovie Animated movie]] --> [[WesternAnimation/BeastWars Sequel]] [[WesternAnimation/BeastMachines cartoons]] --> [[Anime/TransformersRobotsInDisguise Reboot]] [[Anime/UnicronTrilogy cartoons]] --> [[ComicBook/TransformersGenerationOne Lots]] [[ComicBook/TheTransformersAllHailMegatron lots]] [[ComicBook/TheTransformersLastStandOfTheWreckers more]] [[ComicBook/TheTransformersIDW comics]] --> [[Film/{{Transformers}} Live-action movie]] --> [[WesternAnimation/TransformersAnimated Another reboot cartoon]] --> [[Franchise/TransformersTimelines Even more comics, and prose]] --> [[Film/TransformersRevengeOfTheFallen Second movie]] --> [[VideoGame/TransformersWarForCybertron Video game]] --> [[Literature/TransformersExodus More prose]] --> [[WesternAnimation/TransformersPrime Slightly video game/movie-based reboot cartoon]] --> [[Film/TransformersDarkOfTheMoon Third Movie]] --> [[WesternAnimation/TransformersRescueBots Spin-off to the previous cartoon]] --> [[Film/TransformersAgeOfExtinction Fourth Movie]] --> [[WesternAnimation/TransformersRobotsInDisguise Another sequel cartoon]] --> [[Film/TransformersTheLastKnight Fifth Movie]]
* InconsistentDub: The Latin American and ''even the European Spanish'' dubs, ''All the way'': Due to the fact Hasbro wanted to dub the Spanish versions in the U.S. for having more control about the dubbing (This is was during G1, the animated movie and the Japanese Anime versions, mind you) , all the Spanish language versions (including the European one) were sometimes dubbed by a Spanish-language studio in Los Angeles. The main problem with this approach is, due of consideration about the Spaniard viewers, especially in the Anime versions, some series were dubbed using the European Spanish dialect, but keeping the local accents ''intact'': Not only the Latin American viewers had to tolerate a very fake Spaniard accent, but the Spaniards had to tolerate a ridiculous Spaniard dialogue with ''[[NotEvenBotheringWithTheAccent Mexican and Central American accents.]]''
** In fact, Mexican voice acting studios only dubbed a very small amount of Transformers stuff: The Beast Wars/Beast Machines series, Prime, Robots in Disguise and the live-action films. Other countries that dubbed the rest of the TF series were: Chile (Animated) and Venezuela (The Unicron Trilogy).
** While the Mexican dub of Beast Wars was pretty good, it was panned for changing the names of all the characters to Spanish equivalents. This was corrected later in Beast Machines' dub.
* TheMerch: Aside from the toys, there's also OfficialCosplayGear.
* PromotedFanboy: Benson Yee, frequent convention visitor and operator of a popular [[http://www.bwtf.com Transformers web site]]. He was approached on ''Generation One'' expertise for ''WesternAnimation/BeastWars'' and received a "Consultant" credit on certain episodes.)
** Then there's Don Figueroa, who built his own meter-tall custom Transformers from scratch before becoming a fan-favorite artist and toy designer.
*** And [[http://tfwiki.net/wiki/Fandom#Fans_gone_official even more promoted fans]] beyond that.
* RunningTheAsylum: Arguably, it's one of the few series that has benefited from it.
* ShowAccuracyToyAccuracy: Rather famous in the original toyline, as the repurposed toy molds were from stories of piloted (not sentient) mecha and transforming defense bases. Ratchet and Ironhide ([[PaletteSwap repaints of each other]]) weren't even humanoid in their alternate forms. Even ''WesternAnimation/BeastWars'' had to take some liberties with the character models as the toys would have to cheat to be workable with both modes. Because of the lead time necessary for the movie line compared to the actual movie many of the toys are based on earlier designs and not the final character design, although by the third film most every character had a reasonably screen-accurate toy. ''WesternAnimation/TransformersAnimated'' was the first series to feature genuine cooperation between the character designers and the toy developers, resulted in extremely screen accurate toys.
* WhatCouldHaveBeen:
** Many, many toys and concepts end up being discarded - from G1 alone, we have characters originally being named differently (e.g. Swoop was to be named "Divebomb" before the name was later repurposed for the Predacon bird), a planned Unicron toy and ''two'' planned Arcee toys for the original toyline, an axed rerelease of the original Megatron toy in a blue/orange deco (dubbed "Lava Megatron" by Hasbro and "Safety Megatron" by fans), two Megatron triple changers ([[http://tfwiki.net/wiki/File:Megalvatron.jpg one that switched between Megatron, Galvatron and a gun]] and [[http://tfwiki.net/wiki/File:Skywarpatron.jpg another between Megatron, Skywarp and a plane]] and many, many more. See [[http://tfwiki.net/wiki/Unreleased_toy here]] for more.
** A pre-famous Creator/AzizAnsari was up for a role as an Indian call center employee, but he found the insistence that he us a hokey accent degrading.
* TheWikiRule: Website/TFWikiDotNet.

[[AC: [[Film/{{Transformers}} The 2007 Film]]]]
* ActingForTwo: In the first film, Jess Harnell voices both an Autobot and a Decepticon: Ironhide and Barricade.
* DawsonCasting: Creator/ShiaLaBeouf and Creator/MeganFox both turned 20 the year the movie was filmed, both playing high school juniors. Bay mentioned that he was initially not interested in [=LaBeouf=] because in his movies immediately prior he had grown a goatee, making him look too old to play a teenager. Seeing him clean shaven convinced him otherwise.
* FanNickname: Bumblebee projecting an Autobot signal into the clouds = the [[Franchise/{{Batman}} Bot-signal]].
* MoneyDearBoy: Creator/HugoWeaving admits he read his lines without knowing what they mean and that he's not seen the films. Bay's response over this was... not kind.
* NamesTheSame: Rachael Taylor and Anthony Anderson's characters are named [[Series/TheWalkingDead Maggie and Glen]].
* RealitySubtext: Bumblebee vs. Barricade: Chevy Camaro vs. Ford Mustang.[[labelnote:Explanation]]The Chevrolet Camaro was specifically made to be a rival to the Ford Mustang.[[/labelnote]]
* WhatCouldHaveBeen:
** They were going to put a transforming aircraft carrier (which partially inspired the toy-only stealth battleship Depthcharge), but the scale would have been extremely awkward to animate -- as in, it would have likely been able to walk on the ocean floor while keeping its torso above water.
** The very first non-movie character to get a toy was Wreckage - a Decepticon with an APC altmode based on an ILM design that eventually went unused.
** The studio initially requested that they try and make it so the robots don't talk at all, fearing it would come across as silly. Both the writers and Creator/MichaelBay knew that despite the requisite cries it was ruined for [[TheyChangedItNowItSucks any changes]], the fans would absolutely crucify them if the robots didn't talk.
** Soundwave was to appear, his role being an DecompositeCharacter of Frenzy and Barricade. Since there would be major size changes involved (he would go from a robot to a radio to a humvee), he was split off. At first, Frenzy was to be named "Soundwave", but the writers changed it because they felt the character was too different from all the other Soundwaves. Another attempt at working him in eventually turned into Blackout and Scorponok.
*** Blackout also had many other names during development; including Vortex, Devastator (who would later appear in ''ROTF''), Incinerator and even ''[[WesternAnimation/TransformersGeneration1 Grimlock]]'' (though this wouldn't have been the ''[[WesternAnimation/TransformersRobotsInDisguise first]]'' time a character named Grimlock would have had a non-dinosaur alternate mode; the ''Binaltech'' Grimlock, for instance, transformed into a 2002 Ford Mustang GT, not any type of dinosaur). Though Soundwave, Ravage and Laserbeak would all find their way into the second movie.
** Creator/CoreyBurton was asked to audition for a role in the live-action film, but he declined due to not being interested in performing in mega-budget blockbuster movies.
** Arcee was originally gonna appear in the first movie before being replaced by Ironhide. The reason being is to remove exposition of the presence of a female Transformer (or the fact that they have sexes at all) since there was little time for it. Plus, she would be too small by comparison.
* According to the family tree that Sam presents, the Witwicky family consists of two generations of inbreeding. This might be a case of CriticalResearchFailure on Sam's part though.
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