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See also:

* [[Awesome/BeastMachines Crowning Moment Of Awesome]]
* [[Funny/BeastMachines Crowning Moment Of Funny]]
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* AlternateCharacterInterpretation:
** Tankor. The writers intended him to have chosen evil of his own free will after having been twisted by his time under Megatron's control. A popular fan theory is that he ''wasn't'' evil -- his actions were caused by input from his awakened spark being filtered through a shell programme. Both interpretations fit what we see on the screen. (Given that, upon his death, he seemed genuinely repentant, the Shell Program makes a lot of sense.)
** Was Megatron just pretending that [[spoiler:Savage/Noble]] was a wild animal driven purely by instinct, or was he really like that and useful?
* AssPull: [[spoiler:Though well-received, the reveal that Thrust actually has Waspinator's spark rather than Silverbolt's borders on this.]]
** How the Hate Plague was dealt with. Since the original solution - the Matrix of Leadership - was out of the question, Optimus had to craft an answer that even the Transformers Wiki admits was pulled "out of his monkey butt".
* AudienceAlienatingPremise: One reason why it was so ill-received when it first came out. The surviving heroes of the WesternAnimation/BeastWars now forced underground on their own homeworld, their species subjected to a virtual genocide, and struggling to survive against an overwhelming evil force, all set against a backdrop of things like nature vs. technology.
* BetterOnDVD: The series really does work better as a single narrative rather than as an episodic series.
* CompleteMonster: Megatron was already a huge bastard in Beast Wars. This show, however, takes it UpToEleven. Here, he's responsible for the de-sparking of 99.99% of all the Transformers on Cybertron, meaning, effectively, ''he stole their souls''. Then, he tore apart every last one of those vacant bodies and recycled them into his Vehicon drone army. When some of the last Maximals known to exist crashland on what is now his planet, he captures them, gloat over them, and seeks to de-spark ''them'' now too. And, finally, he decides to [[spoiler:devour/absorb all the sparks he's stolen, [[GodIsEvil becoming God in the process]]]].
* ContestedSequel: Between longer story arcs, and a darker tone compared to ''WesternAnimation/BeastWars'', fans of the original either think this was a good follow-up, or a joke to the franchise.
* CriticalBacklash: There were some ''WesternAnimation/BeastWars'' fans who still enjoyed the show as well as newcomers. Most of the complaints were about the many changes to the characters' personalities and behavior.
* DarknessInducedAudienceApathy: It's pretty dark right from the get-go and doesn't let up, so it can be tricky to sit through until the ending.
* DorkAge: Often considered one for the Beast Era of ''Transformers'', due to a massive tone shift from {{Dramedy}} to angsty VillainWorld story. It used to be considered this for ''Transformers'' as a whole -- then ''Anime/TransformersEnergon'' came along.
* EnsembleDarkhorse: Jetstorm is incredibly popular.
** All of the Vehicon generals were, to some extent, particularly Jetstorm and Thrust.
** Diagnostic Drone was well-liked, enough to appear in other continuities after BeastMachines.
* FranchiseOriginalSin: Inverted! A lot of aspects from this show that people complain about (stronger continuity, darker storytelling, InNameOnly characters, etc.) would later be used to good effect by later ''Transformers'' series such as the Dreamwave and IDW comics, ''Transformers Animated'', and ''Transformers Prime''. One could consider this show an experimental first step before it's ideas, themes, and methods were perfected by later incarnations of ''Transformers''.
* GeniusBonus: The title of the episode "Prometheus Unbound" refers to the Greek legend of Prometheus. Anyone who knows about the myth will get why that is notable. Let's just say that it ''heavily'' foreshadows how the series ends.
* HilariousInHindsight: According to a FoxKids press release, the original name for the series was going to be ''[[WesternAnimation/TransformersPrime Beast Hunters]]''.
* ItWasHisSled: [[spoiler: Thrust is actually Waspinator. Even people who haven't seen the series know it.]]
* JerkassWoobie: Nightscream has pretty solid reasons for being messed up... yet the fan consensus seems to be that his annoying qualities outweigh his sympathetic ones and he spends a lot more time angsting than he really should.
** Rattrap in "The Weak Component." His making a deal with Megatron is certainly questionable and often a NeverLiveItDown moment, but considering the way his own teammates (save Optimus) [[KickTheDog treated him]], he had the audience's sympathy.
** Thrust and Jetstorm border on this at times, [[spoiler: especially after [[MoralDissonance Blackarachnia turned Jetstorm painfully back into Silverbolt against his will]].]]
* MagnificentBastard: Megatron is still the master of this. Tankor ''tries'' to be this, [[spoiler:but Megatron seriously out gambits him]].
* {{Narm}}: The bizarre designs for the Maximals' robot modes are a little hard to take seriously at times. In particular: Rattrap having a wheeled axle in place of legs, Blackarachnia's Klingon forehead, Nightscream's floppy hair and general plastic-surgery looks, and the way ''every'' character's eyes pointed in two different directions on a regular basis.
* NightmareFuel:
** Megatron apparently runs on this instead of Energon... He started by spreading a deadly virus across the planet, followed that up by building an army out of mecha-corpses, and decided to finish by ''stealing the souls of his entire species'' long before the maximals landed. He only got worse from there.
** Blackarachnia's faceplate coming up, revealing the extra sets of eyes. Talk about putting your GameFace on.
* ScapegoatCreator: Bob Skir received a great deal of criticism from the fandom - to the point where he had to cancel a convention appearance because he was receiving death threats. While he was indeed one of two story editors, he was blamed for everything a given fan had an issue with. Not exactly fair, especially as Skir didn't develop the series himself and was working from what Marv Wolfman started. Notably, Marty Isenberg (the other story editor) never received such vitriol and his being named story editor of [[WesternAnimation/TransformersAnimated a later show]] was not met with disdain. This all may have been an unfortunate result of Skir making himself available via his website to fans, who incorrectly took him as the ultimate authority of the show.
* TheScrappy: Nightscream was this when the series was originally airing. The fans have mellowed towards him in recent years, but he's still a somewhat disliked character.
* ShockingSwerve: [[spoiler: Thrust being Waspinator instead of Silver Bolt, and Silver Bolt actually being Jetstorm when all of the earlier hints stated that Silver Bolt was Thrust.]]
* TakeThatScrappy: In "Survivor," Nightscream belittles the rest of the team for losing the Beast Wars. Rattrap responds by knocking him to the floor:
--> ''"You watch your mouth, junior! I've lost friends in that war."''
** For some, ''Optimus'' became TheScrappy due to his endless and self-righteously indignant babbling about how "WE NEED TO RESTORE THE BALANCE!" and becoming so fanatical that he was like a KnightTemplar. Thus when Cheetor [[{{CallingTheOldManOut}} called him out]] on his plan to obliterate all the mechanical life on Cybertron--which essentially would have made Optimus an eco-terrorist--many fans rejoiced upon hearing Cheetor's speech. Many felt that Optimus had degenerated into a nutjob who was fanatically following the orders of the vague and mysterious Oracle without question, and [[{{WhatTheHellHero}} needed to be snapped out of it.]]
*** It helps that ''the entire point'' of the first season finale and second season opener seemed to have been about how Optimus was descending into fanaticism and needed to stop himself. He's even brought that delving into that made him NotSoDifferent from Megatron to the point where, a bit in dream sequence, Megatron himself calls him out for it.
* TearJerker: [[spoiler:Savage/Noble]]'s death.
** Optimus learning what really happened to Rhinox - prompting the big ape to let out a BigNo.
* ToughActToFollow: BeastWars was (and still is) seen as one of, if not THE greatest Transformers shows ever and the one that single-handily rescued the franchise from the DorkAge that was Generation 2. So of course Beast Machines was going to have a hard time measuring up.
* TheyChangedItNowItSucks: And ''how.'' The changes to several of the character's personalities were a ''very'' sore point for fans of Beast Wars, for one.
* VindicatedByHistory: Thanks to the UnicronTrilogy's overall bad reception, this series is often seen in a much better light. It's hardly universal, of course, but still quite a feat considering the backlash it once received.
** Similar to the series, Nightscream (who was a major Scrappy when the series first aired) has gained ''some'' fans in recent years, due to future characters being ''much'' less likeable. However, he's still a somewhat disliked character.
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