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* AdultsDressedAsChildren: He's a full grown man yet he wears the same nerdy outfit his present self wears for school everyday.



* ComplexityAddiction: He has a tendency to create complex plans with unnecessary details in order to ensure his past self's academic success.

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* ComplexityAddiction: He has a tendency to create complex plans with unnecessary details in order to ensure his past self's academic success.entry into Eliteanati Academy.



* EvilGenuis: He's Melvin's future self. [[CaptainObvious What did you expect?]]



* ItsAllAboutMe: Taken to the '''extreme'''. He transforms Jerome Horwitz into a devil's paradise for his younger self; from changing the curriculum to meeting his advanced standards to plastering his image everywhere for all to love and worship him.

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* ItsAllAboutMe: Taken to the '''extreme'''. He transforms Jerome Horwitz into a devil's paradise for his younger self; from changing the curriculum to meeting meet his advanced standards to plastering his image everywhere for all to love and worship him.

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* ArcVillain: For Season 2.



* Cyborg: His right half is all robotic and allows him a variety of weapons and gadgets to use when needed.

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* Cyborg: {{Cyborg}}: His right half is all robotic and allows him a variety of weapons and gadgets to use when needed.



* HiddenDepths: Turns out he has an interest in country music.



* ItsAllAboutMe: Taken to the '''extreme'''. He transforms Jerome Horwitz into a paradise for his younger self from changing the curriculum to meeting his advanced standards to plastering his image everywhere for all to love and worship him.

to:

* ItsAllAboutMe: Taken to the '''extreme'''. He transforms Jerome Horwitz into a devil's paradise for his younger self self; from changing the curriculum to meeting his advanced standards to plastering his image everywhere for all to love and worship him.



* KickTheSonOfABitch: As principal, he decides to rehire Krupp by making him ''vice'' principal and subjecting him to the most gruesome and difficult challenges for kicks and giggles. Considering that it's [[{{Jerkass}} Krupp]] of all people, it's one of the few likable qualities of Melvinborg.

to:

* KickTheSonOfABitch: As principal, he decides to rehire Krupp by making him ''vice'' principal and subjecting him to the most gruesome and difficult challenges and humiliating chores for kicks and giggles. Considering that it's [[{{Jerkass}} Krupp]] of all people, it's one of the few likable qualities of Melvinborg.Melvinborg.
* TrademarkFavoriteFood: He has a thing for milkshakes; he even has a milkshake dispenser in his office.
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[[caption-width-right:350:[[labelnote:Click here to see him in his [[spoiler:"Dr. Vil Endenemys"]]form]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]

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[[caption-width-right:350:[[labelnote:Click here to see him in his [[spoiler:"Dr. as "Dr. Vil Endenemys"]]form]]https://static.Endenemys"]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]
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[[caption-width-right:350:[[labelnote:Click here to see him in his [[spoiler:"Dr. Vil Endenemys"]] form]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]

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[[caption-width-right:350:[[labelnote:Click here to see him in his [[spoiler:"Dr. Vil Endenemys"]] form]]https://static.Endenemys"]]form]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]
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[[caption-width-right:350:[[labelnote:Click here to see him as [[spoiler:"Dr. Vil Endenemys"]]]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]

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[[caption-width-right:350:[[labelnote:Click here to see him as in his [[spoiler:"Dr. Vil Endenemys"]]]]https://static.Endenemys"]] form]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]
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[[caption-width-right:350:[[labelnote:Click here to see him as "Dr. Vil Endenemys"]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]

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[[caption-width-right:350:[[labelnote:Click here to see him as "Dr. [[spoiler:"Dr. Vil Endenemys"]]https://static.Endenemys"]]]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]
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[[caption-width-right:350:[[labelnote:Click here to see him as [[spoiler: "Dr. Vil Endenemys"]]]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]

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[[caption-width-right:350:[[labelnote:Click here to see him as [[spoiler: "Dr. Vil Endenemys"]]]]https://static.Endenemys"]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]
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[[caption-width-right:350:[[labelnote:Click here to see him as "[[spoiler:Dr. Vil Endenemys]]"]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]

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[[caption-width-right:350:[[labelnote:Click here to see him as "[[spoiler:Dr. [[spoiler: "Dr. Vil Endenemys]]"]]https://static.Endenemys"]]]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]

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** In the animated series, [[spoiler: his future self is this. No matter how many times George and Harold successfully foil his convoluted schemes with their abilities and dumb luck, Melvinborg doesn't think much of it and brushes them off as hopeless children. This is something that his present self is aware of and constantly chastises him for it]].



[[folder: Melvinborg '''SPOILERS FOR THE SEASON 1 FINALE''']]

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[[folder: Melvinborg '''SPOILERS FOR THE SEASON '''SEASON 1 FINALE''']]FINALE SPOILERS''']]



[[caption-width-right:350:[[{{Film/TheTerminator}} "He can't be bargained with. He can't be reasoned with. He doesn't feel pity, or remorse, or fear. And he will absolutely not stop, ever, until]] Present!Melvin goes to Eliteanati Academy."]]

to:

[[caption-width-right:350:[[{{Film/TheTerminator}} "He can't be bargained with. He can't be reasoned with. He doesn't feel pity, or remorse, or fear. And he will absolutely not stop, ever, EVER, until]] Present!Melvin goes to Eliteanati Academy."]]"]]
[[caption-width-right:350:[[labelnote:Click here to see him as "[[spoiler:Dr. Vil Endenemys]]"]]https://static.tvtropes.org/pmwiki/pub/images/bil.PNG]][[/labelnote]]



Melvin's cyborg self from the future. [[spoiler: Under the guise of Vil Endenemys, he was able to have Krupp fired along with getting George and Harold expelled at the end of the season finale]]. Along with taking over as the new principal, he also serves as the main antagonist for Season 2.

to:

Melvin's cyborg self from the future. [[spoiler: Under the guise of Dr. Vil Endenemys, he was able to have Krupp fired along with aswell as getting George and Harold expelled at the end of the season finale]]. Along with taking over as the new principal, he also serves as the main antagonist for Season 2.



* ComplexityAddiction: He has a tendency to create complex plans with unnecessary details in order to ensure his past self's academic success.
* Cyborg: His right half is all robotic and allows him a variety of weapons and gadgets to use when needed.
* FateWorseThanDeath: [[spoiler: After realizing what a monster his future self is, Melvin decides to never become him; thus erasing Melvinborg from existence]].



* HorribleJudgeOfCharacter: No matter how many times George and Harold successfully foil his convoluted schemes with their abilities and dumb luck, Melvinborg doesn't think much of it and brushes them off as hopeless dopes. [[spoiler: This is something that his present self is aware of and constantly chastises him for it]].
* ItsAllAboutMe: Taken to the '''extreme'''. He transforms Jerome Horwitz into a paradise for his younger self from changing the curriculum to meeting his advanced standards to plastering his image everywhere for all to love and worship him.




to:

* KickTheSonOfABitch: As principal, he decides to rehire Krupp by making him ''vice'' principal and subjecting him to the most gruesome and difficult challenges for kicks and giggles. Considering that it's [[{{Jerkass}} Krupp]] of all people, it's one of the few likable qualities of Melvinborg.

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* AnArmAndALeg: [[spoiler: The reason as to why Future!Melvin is a cyborg is because he was attacked by a swarm of Butt-erflies, sent to the future by George and Harold, that led to a fatal car crash that ruined the right side of his body]].



* FutureMeScaresMe: It's actually more along the lines of Future Me [[spoiler: ''Infuriates'' Me. As Season 2 progresses, Melvin begins to lose patience with his future self because of his complicated plans that always backfire and how he always underestimates George and Harold despite their success rate. It gets to the point that he's had enough of himself and [[FateWorseThanDeath wipes him out of existence]]]].



* DudeWheresMyRespect / MistreatmentInducedBetrayal: His start of darkness was after learning that his best friends initially wrote him as a stupid character along being ridiculed by the school for being a far.

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* DudeWheresMyRespect / MistreatmentInducedBetrayal: His start of darkness was after learning that his best friends initially wrote him as a stupid character for their comic along with being ridiculed by the school for being his existence as a far.fart.


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[[/folder]]

[[folder: Melvinborg '''SPOILERS FOR THE SEASON 1 FINALE''']]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/1293.jpg]]
[[caption-width-right:350:[[{{Film/TheTerminator}} "He can't be bargained with. He can't be reasoned with. He doesn't feel pity, or remorse, or fear. And he will absolutely not stop, ever, until]] Present!Melvin goes to Eliteanati Academy."]]
-->'''Voiced by:''' Jorge Diaz

Melvin's cyborg self from the future. [[spoiler: Under the guise of Vil Endenemys, he was able to have Krupp fired along with getting George and Harold expelled at the end of the season finale]]. Along with taking over as the new principal, he also serves as the main antagonist for Season 2.
----
* AnArmAndALeg: [[spoiler: The reason as to why Future!Melvin is a cyborg is because he was attacked by a swarm of Butt-erflies, sent to the future by George and Harold, that led to a fatal car crash that ruined the right side of his body]].
* FutureMeScaresMe: It's actually more along the lines of Future Me [[spoiler: ''Infuriates'' Me. As Season 2 progresses, Melvin begins to lose patience with his future self because of his complicated plans that always backfire and how he always underestimates George and Harold despite their success rate. It gets to the point that he's had enough of himself and [[FateWorseThanDeath wipes him out of existence]]]].
* {{Jerkass}}: He hasn't changed one bit since he was a kid. [[spoiler: The Season 2 finale suggests that he became even worse]].

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* BadassNormal: One of the few, if not ''the'' only member of CU's RoguesGallery that is a normal human being. Villains such as Melvin or Poopypants don't count since they were already gifted geniuses before they turned to villainy, unlike Murdsly.

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* BadassNormal: One of the few, if not ''the'' only only, member of CU's RoguesGallery that is a normal human being. Villains such as Melvin or Poopypants don't count since they were already gifted geniuses before they turned to villainy, unlike Murdsly.



* DudeWheresMyRespect / MistreatmentInducedBetrayal: His start of darkness was after learning that his best friends initially wrote him as a stupid character along with how they created him just to help them steal Krupp's rule book.

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* CameBackStrong: A non-deadly example. After Captain Underpants inhales him, Smartsy is fused with CU's super-powered DNA which gives him a major power up.
* DudeWheresMyRespect / MistreatmentInducedBetrayal: His start of darkness was after learning that his best friends initially wrote him as a stupid character along with how they created him just to help them steal Krupp's rule book.being ridiculed by the school for being a far.


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* HeelFaceTurn: [[spoiler: He gives up villainy after he becomes a likable internet sensation thanks to his theatrical speeches]].
* NighInvulnerability: Smartsy and his army are immune to all physical attacks thanks to their airy forms.
* SesquipedalianLoquaciousness: His choice in vocabulary is quite advanced because of his intelligence.


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* StrawNihilist: Smartsy borders on this as he often laments how unfair he and his fellow farts have been treated as jokes by humanity and how they deserve better.
* VillainousCrossdresser: He takes on the appearance of the ''tooth fairy'' in order to steal people's farts to create his army.

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* DudeWheresMyRespect / MistreatmentInducedBetrayal: His start of darkness was after learning that his best friends initially wrote him as a stupid character along with how they created him just to help them steal Krupp's rule book.



* MistreatmentInducedBetrayal: His start of darkness was after learning that his best friends initially wrote him as a stupid character along with how they created him just to help them steal Krupp's rule book.

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A giant, vicious toilet who serves as the leader of the Talking Toilets and is the main villain of Book 2.

to:

A giant, vicious toilet who serves as the leader of the Talking Toilets and is the main villain of Book 2.Books 2 and 11.



* TheBrute: He's a hulking figure who often leaves a trail of destruction using his strength.



* AdaptationalBackstoryChange: Much like their leader, they were characters who were created after the boys used the PATSY 2000 believing it to be a copy machine. In the movie, they come alive after being drenched by the toxic residue that used to fuel the Turbo Toilet.

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* AdaptationalBackstoryChange: Much like their leader, they were characters who were created after the boys used the PATSY 2000 believing it to be a copy machine. In the movie, they come alive after being drenched by the toxic residue that was used to fuel the Turbo Toilet.



* BadassNormal: One of the only, if not, ''the'' only member of CU's RoguesGallery that is a normal human being. Villains such as Melvin or Poopypants don't count since they were already gifted geniuses before they turned to villainy, unlike Murdsly.

to:

* BadassNormal: One of the only, few, if not, not ''the'' only member of CU's RoguesGallery that is a normal human being. Villains such as Melvin or Poopypants don't count since they were already gifted geniuses before they turned to villainy, unlike Murdsly.



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* BadassNormal: One of the only, if not, ''the'' only member of CU's RoguesGallery that is a normal human being [[spoiler:, not counting Melvin from the BadFuture where Mr. Krupp became a CorruptCorporateExecutive]].

to:

* BadassNormal: One of the only, if not, ''the'' only member of CU's RoguesGallery that is a normal human being [[spoiler:, not counting being. Villains such as Melvin from the BadFuture where Mr. Krupp became a CorruptCorporateExecutive]].or Poopypants don't count since they were already gifted geniuses before they turned to villainy, unlike Murdsly.



* BestServedCold: Invoked. Murdsly spent 20 years creating the memory wipes before he could set his revenge scheme in motion.

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* BestServedCold: Invoked. Murdsly spent 20 roughly twenty years creating the memory wipes before he could set take his revenge scheme in motion.against Jerome Horwitz.




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[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/fart.PNG]]




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----
* ArcVillain: He serves as the main antagonist for the two part season 1 finale.
* BlowYouAway: Being a sentient fart cloud, his attacks are all wind-based.
* EvilFormerFriend: Before he turned evil, he considered George and Harold to be his best friends.
* MistreatmentInducedBetrayal: His start of darkness was after learning that his best friends initially wrote him as a stupid character along with how they created him just to help them steal Krupp's rule book.
* SmartPeopleSpeakTheQueensEnglish: He speaks with a British accent and is very intelligent.
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* CoolAndUnusualPunishment: After he's apprehended by [[spoiler: The Society of Robes]], he's left imprisoned with the worst prisoner imaginable: [[spoiler: a clown]].

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* CoolAndUnusualPunishment: After he's apprehended by [[spoiler: The Society of Robes]], he's left imprisoned with the worst prisoner imaginable: [[spoiler: a clown]].clown, who coincidentally was Captain Underpants's greatly appreciated cellmate during the time in which he was framed for crimes committed by Splotch]].

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A toilet paper salesman who tries to take over Jerome Horwitz. Having become a laughingstock among his peers for getting chocolate pudding on his pants resulting in the 'death sentence' title of ''Ted Turdsely'', Murdsly is motivated to erase the name and create a new identity for himself as the greatest principal ever.

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A toilet paper salesman who tries to take over Jerome Horwitz. Having become a laughingstock among his peers for getting chocolate pudding on his pants resulting in the 'death sentence' title of ''Ted Turdsely'', Turdsly'', Murdsly is motivated to erase the name and create a new identity for himself as the greatest principal ever.


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[[/folder]]

[[folder: Smartsy Fartsy]]

-->'''Voiced by:''' Trevor Devall

A sentient and quite eloquent fart cloud that was brought to life by the [[Trope2000 Elevapor 2000]], an invention of Melvin. After being offended by George and Harold's comic book featuring a dumb character of the same name (which was created ''before'' him), he attempts to get revenge on them in order to ensure that he gets respect.
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Added DiffLines:

* BadassNormal: One of the only, if not, ''the'' only member of CU's RoguesGallery that is a normal human being [[spoiler:, not counting Melvin from the BadFuture where Mr. Krupp became a CorruptCorporateExecutive]].
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* PuppeteerParasite: In both appearances, he needs to rely on a human host; the first was Jerry Citizen and the second was [[spoiler: Mr. Rhee]].

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* PuppeteerParasite: In both appearances, he needs to rely on a human host; the first was Jerry Citizen and the second was [[spoiler: Mr. Rhee]].Ree]].


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* VerbalTic: Almost every other word he says has the word “Stinkin’” in front of it.

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A toilet paper salesman who tries to take over Jerome Horwitz. Having become a laughingstock among his peers for getting chocolate pudding on his pants resulting in the 'death sentence' title of ''Ted Turdsely'', Ted is motivated to erase the name and create a new identity for himself as the greatest principal ever.

to:

A toilet paper salesman who tries to take over Jerome Horwitz. Having become a laughingstock among his peers for getting chocolate pudding on his pants resulting in the 'death sentence' title of ''Ted Turdsely'', Ted Murdsly is motivated to erase the name and create a new identity for himself as the greatest principal ever.



* BestServedCold: Invoked. Murdsly had to wait 20 years to create the memory wipes before he could set his revenge scheme in motion.

to:

* BestServedCold: Invoked. Murdsly had to wait spent 20 years to create creating the memory wipes before he could set his revenge scheme in motion.


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* ManChild: He often lets his emotions get the better of him, leading him to act very immature and unreasonable.
* MiniMecha: With Melvin's help, Murdsly gains a giant robot capable of erasing anyone's memory in an instance.

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* KarmicDeath: [[spoiler: For attempting to blow up the planet, Tippy gets killed off permanently]].

to:

* KarmicDeath: [[spoiler: For attempting to blow up the planet, Tippy gets killed off permanently]].permanently. Also, it's his mistreatment of his past counterparts that result in them sabotaging his machine resulting in their own deaths]].



** In the movie:

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** In the movie:movie, he decides to play onto the villain role after seeing the boys' comic and finalizing his laughter removal machine. He even changes his outfit to match the one that George and Harold made for the comics.



** In the movie, he even changes his outfit to match the one that George and Harold made for the comics.
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Added DiffLines:

[[/folder]]

[[folder: Theodore Murdsly]]
[[quoteright:210:https://static.tvtropes.org/pmwiki/pub/images/ted_murdsly_the_epic_tales_of_captain_underpants_461.jpg]]

-->'''Voiced by:''' Rob Riggle

A toilet paper salesman who tries to take over Jerome Horwitz. Having become a laughingstock among his peers for getting chocolate pudding on his pants resulting in the 'death sentence' title of ''Ted Turdsely'', Ted is motivated to erase the name and create a new identity for himself as the greatest principal ever.
----
* BerserkButton: ''Ted Turdsely''.
* BestServedCold: Invoked. Murdsly had to wait 20 years to create the memory wipes before he could set his revenge scheme in motion.
* HairTriggerTemper: It doesn't take much to set him off. Especially if it's the name that shall not be said.
* KidsAreCruel: His childhood peers christened him with the nickname ''Ted Turdsely'' and never made him forget it. It's so bad that it's been an ongoing tradition among the students of Jerome Horwitz.
* LaserGuidedAmnesia: He created toilet wipes that are capable of erasing a person's memory along with making them extremely suggestible.
* TragicVillain: At the end of the day, he is a miserable man who only wanted to start his life over after having it ruined since he was a child.
* WeWillMeetAgain: [[spoiler: Before he escapes, he vows to return to enact his revenge against the boys and the whole school]].

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[[folder:Evil George, Evil Harold, and Captain Blunderpants]]
[[quoteright:185:https://static.tvtropes.org/pmwiki/pub/images/nice_krupp_is_now_the_mean_captain_blunderpants.png]]
[[caption-width-right:185:[[{{Film/Us}} "We are our own worst enemy."]]]]

The Purple Potty counterparts of our heroes. Rotten to the core, they enjoy using their supervillain creation to do whatever sinister schemes they want.

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[[folder:Evil George, Evil Harold, [[folder: Zorx, Klax and Captain Blunderpants]]
[[quoteright:185:https://static.
Jennifer]]
[[quoteright:108:https://static.
tvtropes.org/pmwiki/pub/images/nice_krupp_is_now_the_mean_captain_blunderpants.png]]
[[caption-width-right:185:[[{{Film/Us}} "We are our own worst enemy."]]]]

The Purple Potty counterparts
org/pmwiki/pub/images/popuptout_spaceguys_1.gif]]
A trio
of our heroes. Rotten aliens who disguised themselves as lunch ladies in order to brainwash the core, school so they enjoy using their supervillain creation to do whatever sinister schemes they want.can take over the world.



* EvilCounterpart: Evil George and Harold are mean-spirited and wicked children who make their own comic books. However, they are actually more talented than their good counterparts, creating much better drawn comics with proper spelling and grammar. Inverted with Mr. Krupp, who is a nice principal with a good sense of humor.
* EvilTwin: That pretty much goes without saying.
* KarmaHoudini: [[spoiler: Even after being defeated by the Arthritic Avengers and being sent back to their universe, it's more than likely that they'll go back to terrorizing their world with Captain Blunderpants. They even manage to get their good counterparts arrested for the crimes they committed in the main universe]].
* WeaksauceWeakness: Probably even moreso than Captain Underpants. All you have to do is snap your fingers to turn Captain Blunderpants back into Nice Krupp.
* WouldHurtAChild: Captain Blunderpants was about to utterly pulverize George and Harold... but then [[spoiler:[[BigDamnHeroes Harold’s grandfather and George’s great-grandmother came to the rescue]]]].

to:

* EvilCounterpart: Evil George AerithAndBob: Two of them are alien-sounding while the third is a common name among Earth women.
* AlienInvasion: Their grand scheme was to turn the students
and Harold are mean-spirited faculty into zombie nerds and wicked children who make their own comic books. However, would then turn them into giant minions that would serve them as they are actually more talented than their good counterparts, creating much better drawn comics with proper spelling and grammar. Inverted with Mr. Krupp, who is a nice principal with a good sense of humor.
conquer the Earth.
* EvilTwin: That pretty much goes without saying.
TheCameo: The appear in TheMovie during the end credits, suspiciously right after [[AlienAmongUs Edith's]] segment.
* KarmaHoudini: KilledOffForReal: [[spoiler: Even They end up being killed after being defeated by the Arthritic Avengers and being sent back to their universe, it's more than likely that they'll go back to terrorizing their world with Captain Blunderpants. They even manage to get their good counterparts arrested for the crimes they committed in the main universe]].
* WeaksauceWeakness: Probably even moreso than Captain Underpants. All you have to do is snap your fingers to turn Captain Blunderpants back into Nice Krupp.
* WouldHurtAChild: Captain Blunderpants was about to utterly pulverize George and Harold... but then [[spoiler:[[BigDamnHeroes Harold’s grandfather and George’s great-grandmother came
UFO explodes thanks to the rescue]]]].
boys tampering with their fuel systems]].
* OctopoidAliens: They come off as this because of their green skin and tentacles for hands.
* ScaryTeeth: They have razor, sharp teeth to fit their evil appearances.
* WholesomeCrossdresser: They're all male-coded but dress up as feminine cafeteria ladies.



[[folder:Kipper, Bugg, Loogie and Finkstein]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/kipper.PNG]]
[[caption-width-right:350:Kipper is the boy on the right with the smug grin and a key for a necklace. Bugg is the boy on the far left with dark hair, Loogie has the baseball cap and Finkstein has bangs covering his face. [[TagLine Remember that now]]]]

A group of bullies who used to torment Harold when he was in kindergarten. They've been able to get away with their despicable crimes since Kipper, the ringleader of the group, is the spoiled nephew of Mr. Krupp.

to:

[[folder:Kipper, Bugg, Loogie [[folder: Evil George, Evil Harold, and Finkstein]]
[[quoteright:350:https://static.
Captain Blunderpants]]
[[quoteright:185:https://static.
tvtropes.org/pmwiki/pub/images/kipper.PNG]]
[[caption-width-right:350:Kipper is
org/pmwiki/pub/images/nice_krupp_is_now_the_mean_captain_blunderpants.png]]
[[caption-width-right:185:[[{{Film/Us}} "We are our own worst enemy."]]]]

The Purple Potty counterparts of our heroes. Rotten to
the boy on the right with the smug grin and a key for a necklace. Bugg is the boy on the far left with dark hair, Loogie has the baseball cap and Finkstein has bangs covering his face. [[TagLine Remember that now]]]]

A group of bullies who used to torment Harold when he was in kindergarten. They've been able to get away with
core, they enjoy using their despicable crimes since Kipper, the ringleader of the group, is the spoiled nephew of Mr. Krupp.supervillain creation to do whatever sinister schemes they want.


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* EvilCounterpart: Evil George and Harold are mean-spirited and wicked children who make their own comic books. However, they are actually more talented than their good counterparts, creating much better drawn comics with proper spelling and grammar. Inverted with Mr. Krupp, who is a nice principal with a good sense of humor.
* EvilTwin: That pretty much goes without saying.
* KarmaHoudini: [[spoiler: Even after being defeated by the Arthritic Avengers and being sent back to their universe, it's more than likely that they'll go back to terrorizing their world with Captain Blunderpants. They even manage to get their good counterparts arrested for the crimes they committed in the main universe]].
* WeaksauceWeakness: Probably even moreso than Captain Underpants. All you have to do is snap your fingers to turn Captain Blunderpants back into Nice Krupp.
* WouldHurtAChild: Captain Blunderpants was about to utterly pulverize George and Harold... but then [[spoiler:[[BigDamnHeroes Harold’s grandfather and George’s great-grandmother came to the rescue]]]].

[[/folder]]

[[folder: Kipper, Bugg, Loogie and Finkstein]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/kipper.PNG]]
[[caption-width-right:350:Kipper is the boy on the right with the smug grin and a key for a necklace. Bugg is the boy on the far left with dark hair, Loogie has the baseball cap and Finkstein has bangs covering his face. [[TagLine Remember that now]]]]

A group of bullies who used to torment Harold when he was in kindergarten. They've been able to get away with their despicable crimes since Kipper, the ringleader of the group, is the spoiled nephew of Mr. Krupp.
----
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A collection of villains, [[MonsterOfTheWeek monsters of the week]] and other mega-maniacal weirdos that our heroes often face in their daily adventures.

to:

A collection of villains, [[ArcVillain villains]], [[MonsterOfTheWeek monsters of the week]] monsters]] and other mega-maniacal weirdos that our heroes often face in their daily adventures.



* AliensAreBastards: In his first appearance, he was very aggressive towards his host Jerry. In his second appearance, [[AlienInvasion he tries to take over the world]].

to:

* AliensAreBastards: In his first appearance, he was very aggressive towards his host Jerry.Jerry and attacked everything without bias. In his second appearance, [[AlienInvasion he tries to take over the world]].



* {{Expy}}: He's a carbon copy of [[{{ComicBook/Venom}} Venom]].

to:

* {{Expy}}: He's a carbon copy of deadringer for [[{{ComicBook/Venom}} Venom]].



* PuppeteerParasite: In both appearances, he needs to rely on a human host. The first was Jerry Citizen and the second was [[spoiler: Mr. Rhee]].

to:

* PuppeteerParasite: In both appearances, he needs to rely on a human host. The host; the first was Jerry Citizen and the second was [[spoiler: Mr. Rhee]].



-->'''Voiced by:''' [[{{Creator/JohnDiaggio}} John DiMaggio]]

to:

-->'''Voiced by:''' [[{{Creator/JohnDiaggio}} [[{{Creator/JohnDimaggio}} John DiMaggio]]



* GoodDefeatsEvil: He meets his defeat in the form of [[spoiler: a brand of soap detergent which is made of 100% good]].
* GoshDangItToHeck: He has quite the colorful vocabulary. Especially considering his voice actor.

to:

* GoodDefeatsEvil: GoodHurtsEvil: He meets his defeat in the form of [[spoiler: a brand of soap detergent which is made of 100% good]].
* GoshDangItToHeck: He has quite the colorful vocabulary. Especially Though this was a given considering his voice actor.

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-->'''Voiced by:''' Clancy Brown

to:

-->'''Voiced by:''' [[{{Creator/Clancy Brown}} Clancy Brown
Brown]]



* PuppeteerParasite: In both appearances, he needs to rely on a human host. The first was Jerry Citizen and the second was [[spoiler: Mr. Rhee]].

to:

* PuppeteerParasite: In both appearances, he needs to rely on a human host. The first was Jerry Citizen and the second was [[spoiler: Mr. Rhee]].Rhee]].
[[/folder]]

[[folder: Socktopus]]
[[quoteright:210:https://static.tvtropes.org/pmwiki/pub/images/smelly_socktopus_the_epic_tales_of_captain_underpants_84.jpg]]
-->'''Voiced by:''' [[{{Creator/JohnDiaggio}} John DiMaggio]]

A giant sock monster that captured the entire student body and faculty in order to harvest their stinky socks so he can take over Piqua.
----
* CombatTentacles: His main form of attack.
* GoodDefeatsEvil: He meets his defeat in the form of [[spoiler: a brand of soap detergent which is made of 100% good]].
* GoshDangItToHeck: He has quite the colorful vocabulary. Especially considering his voice actor.
* IJustWantToBeLoved: Before being defeated, Socktopus exclaims that he only wanted dirty socks such as himself to be appreciated more.
* LogicalWeakness: What do you do to get rid of stinky socks? [[spoiler: You wash them with soap detergent of course!]]
* MadeOfEvil: His genesis was a result of a bunch of socks being mixed with Mr. Krupp's toupee polish which is made of evil. [[NotMakingThisUpDisclaimer Really!]]
[[/folder]]

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[[foldercontrol]]



[[caption-width-right:350:Kipper is the boy on the right with the smug grin and a key for a necklace. Bugg is the boy on the far right with dark hair, Loogie has the baseball cap and Finkstein has bangs covering his face. [[TagLine Remember that now]]]]

to:

[[caption-width-right:350:Kipper is the boy on the right with the smug grin and a key for a necklace. Bugg is the boy on the far right left with dark hair, Loogie has the baseball cap and Finkstein has bangs covering his face. [[TagLine Remember that now]]]]



!!Introduced in the Animated Series

to:

!!Introduced in the Animated SeriesSeries
[[folder: The Splotch]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/tumblr_inline_pbw97aajop1qkmm41_1280.png]]
[[caption-width-right:350:[[{{Film/Venom2018}} We are Splotch!]]]]
-->'''Voiced by:''' Clancy Brown

An evil, robe-like alien with plans for world domination. He was initially a sentient robe with a hostile attitude but it evolved after being dunked in toxic residue.
----
* AliensAreBastards: In his first appearance, he was very aggressive towards his host Jerry. In his second appearance, [[AlienInvasion he tries to take over the world]].
* CoolAndUnusualPunishment: After he's apprehended by [[spoiler: The Society of Robes]], he's left imprisoned with the worst prisoner imaginable: [[spoiler: a clown]].
* EvilCounterpart: After being dunked in toxic waste, the Splotch takes on an appearance that greatly resembles the Waistband Warrior himself.
* {{Expy}}: He's a carbon copy of [[{{ComicBook/Venom}} Venom]].
* FrameUp: [[spoiler: In his second appearance, he commits multiple crimes to convince the people that Captain Underpants did it so he can be arrested and the Splotch can carry on with his world domination plan without CU getting in the way]].
* PuppeteerParasite: In both appearances, he needs to rely on a human host. The first was Jerry Citizen and the second was [[spoiler: Mr. Rhee]].
Is there an issue? Send a MessageReason:
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** In the animated series, [[spoiler: his future self is this. No matter how many times George and Harold successfully foil his convoluted schemes with their abilities and dumb luck, MelvinBorg doesn't think much of it and brushes them off as hopeless children. This is something that his present self is aware of and constantly chastises him for it]].

to:

** In the animated series, [[spoiler: his future self is this. No matter how many times George and Harold successfully foil his convoluted schemes with their abilities and dumb luck, MelvinBorg Melvinborg doesn't think much of it and brushes them off as hopeless children. This is something that his present self is aware of and constantly chastises him for it]].

Added: 1872

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* ArcVillain: He arguably fits this role in the first season of the animated series as every catastrophic event, along with several of the [[MonsterOfTheWeek villains of the week]], can be traced back to his inventions, his selfish desires, or ''both''. [[spoiler: He continues this role in season 2 after he and his future counterpart take over the school and do everything in their power to try and get present!Melvin accepted into Elitenati Academy]].

to:

* ArcVillain: He arguably fits this role in the first season of the animated series as every catastrophic event, along with several of the [[MonsterOfTheWeek villains of the week]], can be traced back to his inventions, his selfish desires, or ''both''. [[spoiler: He continues this role in season 2 after he and his future counterpart take over the school and do everything in their power to try and get present!Melvin accepted into Elitenati Eliteanati Academy]].



[[folder: Turbo Toilet 2000]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/tt2000.png]]

A giant, vicious toilet who serves as the leader of the Talking Toilets and is the main villain of Book 2.

to:

[[folder: Turbo Toilet 2000]]
Dr. Diaper]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/tt2000.png]]

org/pmwiki/pub/images/popuptout_diaper.gif]]

A giant, vicious toilet mad scientist who serves as looks dresses like a baby. He planned to destroy the leader of moon, which in turn would destroy every major city, which would allow him to take over the Talking Toilets and is the main villain of Book 2.Earth.



* AdaptationalBackstoryChange: In the book series, he was a character created by the boys and was brought to life by the PATSY 2000. In the movie, he was an invention made by Melvin and was later remade into a formidable weapon by Professor Poopypants.
* RoaringRampageOfRevenge: In Book 11, [[spoiler: the Turbo Toilet travels back to Earth seeking revenge against the heroes for killing his toilet army]].
* SpikesOfVillainy: He has spikes on his arms and boots.
* TheCanKickedHim: The Turbo Toilet gives Captain Underpants a brutal beating in both versions.

to:

* AdaptationalBackstoryChange: In TheCameo: He makes an appearance in the book series, he was a character created by the boys and was brought same jail that Poopypants is sent to life by the PATSY 2000. in Book 4.
**
In the movie, he was an invention made by Melvin and was later remade into a formidable weapon by Professor Poopypants.
* RoaringRampageOfRevenge: In Book 11, [[spoiler: the Turbo Toilet travels back to Earth seeking revenge against the heroes for killing
his toilet army]].
* SpikesOfVillainy: He has spikes on his arms and boots.
* TheCanKickedHim: The Turbo Toilet gives
name is mentioned when Captain Underpants a brutal beating in both versions.is reading one of the comics the boys made.
* GenericDoomsdayVillain: He doesn't have much character depth outside of wanting to destroy the world so he can take over it.
* MechaMooks: He has two robot henchmen who help him carry out his schemes.
* StarterVillain: Series-wise, he's the first villain that George, Harold and Captain Underpants ever face against.



[[folder: Talking Toilets]]
[[quoteright:226:https://static.tvtropes.org/pmwiki/pub/images/toilet_0.jpg]]
[[caption-width-right:226:"YUM, YUM, EAT 'EM UP!"]]

An army of [[ExactlyWhatItSaysOnTheTin talking toilets]] who eat everything on sight.

to:

[[folder: Talking Toilets]]
[[quoteright:226:https://static.
Turbo Toilet 2000]]
[[quoteright:350:https://static.
tvtropes.org/pmwiki/pub/images/toilet_0.jpg]]
[[caption-width-right:226:"YUM, YUM, EAT 'EM UP!"]]

An army of [[ExactlyWhatItSaysOnTheTin talking toilets]]
org/pmwiki/pub/images/tt2000.png]]

A giant, vicious toilet
who eat everything on sight.serves as the leader of the Talking Toilets and is the main villain of Book 2.



* AdaptationalBackstoryChange: Much like their leader, they were characters who were created after the boys used the PATSY 2000 believing it to be a copy machine. In the movie, they come alive after being drenched by the toxic residue that used to fuel the Turbo Toilet.
* MoreTeethThanTheOsmondFamily: They have vicious teeth that are perfect for eating.
* TheCanKickedHim: They have an interest in eating humans and are capable of swallowing them in a single flush.

to:

* AdaptationalBackstoryChange: Much like their leader, they were characters who were In the book series, he was a character created after by the boys used and was brought to life by the PATSY 2000 believing it to be a copy machine. 2000. In the movie, they come alive after being drenched he was an invention made by the toxic residue that used to fuel Melvin and was later remade into a formidable weapon by Professor Poopypants.
* RoaringRampageOfRevenge: In Book 11, [[spoiler:
the Turbo Toilet.
* MoreTeethThanTheOsmondFamily: They have vicious teeth that are perfect
Toilet travels back to Earth seeking revenge against the heroes for eating.
killing his toilet army]].
* SpikesOfVillainy: He has spikes on his arms and boots.
* TheCanKickedHim: They have an interest The Turbo Toilet gives Captain Underpants a brutal beating in eating humans and are capable of swallowing them in a single flush.both versions.



[[folder:Evil George, Evil Harold, and Captain Blunderpants]]
[[quoteright:185:https://static.tvtropes.org/pmwiki/pub/images/nice_krupp_is_now_the_mean_captain_blunderpants.png]]
[[caption-width-right:185:[[{{Film/Us}} "We are our own worst enemy."]]]]

The Purple Potty counterparts of our heroes. Rotten to the core, they enjoy using their supervillain creation to do whatever sinister schemes they want.

to:

[[folder:Evil George, Evil Harold, and Captain Blunderpants]]
[[quoteright:185:https://static.
[[folder: Talking Toilets]]
[[quoteright:226:https://static.
tvtropes.org/pmwiki/pub/images/nice_krupp_is_now_the_mean_captain_blunderpants.png]]
[[caption-width-right:185:[[{{Film/Us}} "We are our own worst enemy."]]]]

The Purple Potty counterparts
org/pmwiki/pub/images/toilet_0.jpg]]
[[caption-width-right:226:"YUM, YUM, EAT 'EM UP!"]]

An army
of our heroes. Rotten to the core, they enjoy using their supervillain creation to do whatever sinister schemes they want.[[ExactlyWhatItSaysOnTheTin talking toilets]] who eat everything on sight.



* EvilCounterpart: Evil George and Harold are mean-spirited and wicked children who make their own comic books. However, they are actually more talented than their good counterparts, creating much better drawn comics with proper spelling and grammar. Inverted with Mr. Krupp, who is a nice principal with a good sense of humor.
* EvilTwin: That pretty much goes without saying.
* KarmaHoudini: [[spoiler: Even after being defeated by the Arthritic Avengers and being sent back to their universe, it's more than likely that they'll go back to terrorizing their world with Captain Blunderpants. They even manage to get their good counterparts arrested for the crimes they committed in the main universe]].
* WeaksauceWeakness: Probably even moreso than Captain Underpants. All you have to do is snap your fingers to turn Captain Blunderpants back into Nice Krupp.
* WouldHurtAChild: Captain Blunderpants was about to utterly pulverize George and Harold... but then [[spoiler:[[BigDamnHeroes Harold’s grandfather and George’s great-grandmother came to the rescue]]]].

to:

* EvilCounterpart: Evil George and Harold are mean-spirited and wicked children who make AdaptationalBackstoryChange: Much like their own comic books. However, leader, they are actually more talented than their good counterparts, creating much better drawn comics with proper spelling and grammar. Inverted with Mr. Krupp, were characters who is were created after the boys used the PATSY 2000 believing it to be a nice principal with a good sense of humor.
* EvilTwin: That pretty much goes without saying.
* KarmaHoudini: [[spoiler: Even
copy machine. In the movie, they come alive after being defeated drenched by the Arthritic Avengers and being sent back to their universe, it's more than likely toxic residue that they'll go back used to terrorizing their world with Captain Blunderpants. fuel the Turbo Toilet.
* MoreTeethThanTheOsmondFamily:
They even manage to get their good counterparts arrested for the crimes they committed in the main universe]].
* WeaksauceWeakness: Probably even moreso than Captain Underpants. All you
have to do is snap your fingers to turn Captain Blunderpants back into Nice Krupp.
vicious teeth that are perfect for eating.
* WouldHurtAChild: Captain Blunderpants was about to utterly pulverize George TheCanKickedHim: They have an interest in eating humans and Harold... but then [[spoiler:[[BigDamnHeroes Harold’s grandfather and George’s great-grandmother came to the rescue]]]].
are capable of swallowing them in a single flush.



[[folder:Kipper, Bugg, Loogie and Finkstein]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/kipper.PNG]]
[[caption-width-right:350:Kipper is the boy on the right with the smug grin and a key for a necklace. Bugg is the boy on the far right with dark hair, Loogie has the baseball cap and Finkstein has bangs covering his face. [[TagLine Remember that now]]]]

A group of bullies who used to torment Harold when he was in kindergarten. They've been able to get away with their despicable crimes since Kipper, the ringleader of the group, is the spoiled nephew of Mr. Krupp.

to:

[[folder:Kipper, Bugg, Loogie [[folder:Evil George, Evil Harold, and Finkstein]]
[[quoteright:350:https://static.
Captain Blunderpants]]
[[quoteright:185:https://static.
tvtropes.org/pmwiki/pub/images/kipper.PNG]]
[[caption-width-right:350:Kipper is
org/pmwiki/pub/images/nice_krupp_is_now_the_mean_captain_blunderpants.png]]
[[caption-width-right:185:[[{{Film/Us}} "We are our own worst enemy."]]]]

The Purple Potty counterparts of our heroes. Rotten to
the boy on the right with the smug grin and a key for a necklace. Bugg is the boy on the far right with dark hair, Loogie has the baseball cap and Finkstein has bangs covering his face. [[TagLine Remember that now]]]]

A group of bullies who used to torment Harold when he was in kindergarten. They've been able to get away with
core, they enjoy using their despicable crimes since Kipper, the ringleader of the group, is the spoiled nephew of Mr. Krupp.supervillain creation to do whatever sinister schemes they want.


Added DiffLines:

* EvilCounterpart: Evil George and Harold are mean-spirited and wicked children who make their own comic books. However, they are actually more talented than their good counterparts, creating much better drawn comics with proper spelling and grammar. Inverted with Mr. Krupp, who is a nice principal with a good sense of humor.
* EvilTwin: That pretty much goes without saying.
* KarmaHoudini: [[spoiler: Even after being defeated by the Arthritic Avengers and being sent back to their universe, it's more than likely that they'll go back to terrorizing their world with Captain Blunderpants. They even manage to get their good counterparts arrested for the crimes they committed in the main universe]].
* WeaksauceWeakness: Probably even moreso than Captain Underpants. All you have to do is snap your fingers to turn Captain Blunderpants back into Nice Krupp.
* WouldHurtAChild: Captain Blunderpants was about to utterly pulverize George and Harold... but then [[spoiler:[[BigDamnHeroes Harold’s grandfather and George’s great-grandmother came to the rescue]]]].

[[/folder]]

[[folder:Kipper, Bugg, Loogie and Finkstein]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/kipper.PNG]]
[[caption-width-right:350:Kipper is the boy on the right with the smug grin and a key for a necklace. Bugg is the boy on the far right with dark hair, Loogie has the baseball cap and Finkstein has bangs covering his face. [[TagLine Remember that now]]]]

A group of bullies who used to torment Harold when he was in kindergarten. They've been able to get away with their despicable crimes since Kipper, the ringleader of the group, is the spoiled nephew of Mr. Krupp.
----

Added: 2546

Changed: 1941

Removed: 354

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[[folder:Evil George, Evil Harold, and Captain Blunderpants]]
[[quoteright:185:https://static.tvtropes.org/pmwiki/pub/images/nice_krupp_is_now_the_mean_captain_blunderpants.png]]
[[caption-width-right:185:[[{{Film/Us}} "We are our own worst enemy."]]]]

The Purple Potty counterparts of our heroes. Rotten to the core, they enjoy using their supervillain creation to do whatever sinister schemes they want.

to:

[[folder:Evil George, Evil Harold, and Captain Blunderpants]]
[[quoteright:185:https://static.
[[folder: Turbo Toilet 2000]]
[[quoteright:350:https://static.
tvtropes.org/pmwiki/pub/images/nice_krupp_is_now_the_mean_captain_blunderpants.png]]
[[caption-width-right:185:[[{{Film/Us}} "We are our own worst enemy."]]]]

The Purple Potty counterparts of our heroes. Rotten to
org/pmwiki/pub/images/tt2000.png]]

A giant, vicious toilet who serves as
the core, they enjoy using their supervillain creation to do whatever sinister schemes they want.leader of the Talking Toilets and is the main villain of Book 2.



* EvilCounterpart: Evil George and Harold are mean-spirited and wicked children who make their own comic books. However, they are actually more talented than their good counterparts, creating much better drawn comics with proper spelling and grammar. Inverted with Mr. Krupp, who is a nice principal with a good sense of humor.
* EvilTwin: That pretty much goes without saying.
* KarmaHoudini: [[spoiler: Even after being defeated by the Arthritic Avengers and being sent back to their universe, it's more than likely that they'll go back to terrorizing their world with Captain Blunderpants. They even manage to get their good counterparts arrested for the crimes they committed in the main universe]].
* WeaksauceWeakness: Probably even moreso than Captain Underpants. All you have to do is snap your fingers to turn Captain Blunderpants back into Nice Krupp.
* WouldHurtAChild: Captain Blunderpants was about to utterly pulverize George and Harold... but then [[spoiler:[[BigDamnHeroes Harold’s grandfather and George’s great-grandmother came to the rescue]]]].

to:

* EvilCounterpart: Evil George AdaptationalBackstoryChange: In the book series, he was a character created by the boys and Harold are mean-spirited was brought to life by the PATSY 2000. In the movie, he was an invention made by Melvin and wicked children who make their own comic books. However, they are actually more talented than their good counterparts, creating much better drawn comics with proper spelling and grammar. Inverted with Mr. Krupp, who is was later remade into a nice principal with a good sense of humor.
formidable weapon by Professor Poopypants.
* EvilTwin: That pretty much goes without saying.
* KarmaHoudini:
RoaringRampageOfRevenge: In Book 11, [[spoiler: Even after being defeated by the Arthritic Avengers and being sent Turbo Toilet travels back to their universe, it's more than likely that they'll go back to terrorizing their world with Earth seeking revenge against the heroes for killing his toilet army]].
* SpikesOfVillainy: He has spikes on his arms and boots.
* TheCanKickedHim: The Turbo Toilet gives
Captain Blunderpants. They even manage to get their good counterparts arrested for the crimes they committed Underpants a brutal beating in the main universe]].
* WeaksauceWeakness: Probably even moreso than Captain Underpants. All you have to do is snap your fingers to turn Captain Blunderpants back into Nice Krupp.
* WouldHurtAChild: Captain Blunderpants was about to utterly pulverize George and Harold... but then [[spoiler:[[BigDamnHeroes Harold’s grandfather and George’s great-grandmother came to the rescue]]]].
both versions.



[[folder:Kipper, Bugg, Loogie and Finkstein]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/kipper.PNG]]
[[caption-width-right:350:Kipper is the boy on the right with the smug grin and a key for a necklace. Bugg is the boy on the far right with dark hair, Loogie has the baseball cap and Finkstein has bangs covering his face. [[TagLine Remember that now]]]]

A group of bullies who used to torment Harold when he was in kindergarten. They've been able to get away with their despicable crimes since Kipper, the ringleader of the group, is the spoiled nephew of Mr. Krupp.

to:

[[folder:Kipper, Bugg, Loogie and Finkstein]]
[[quoteright:350:https://static.
[[folder: Talking Toilets]]
[[quoteright:226:https://static.
tvtropes.org/pmwiki/pub/images/kipper.PNG]]
[[caption-width-right:350:Kipper is the boy on the right with the smug grin and a key for a necklace. Bugg is the boy on the far right with dark hair, Loogie has the baseball cap and Finkstein has bangs covering his face. [[TagLine Remember that now]]]]

A group
org/pmwiki/pub/images/toilet_0.jpg]]
[[caption-width-right:226:"YUM, YUM, EAT 'EM UP!"]]

An army
of bullies [[ExactlyWhatItSaysOnTheTin talking toilets]] who used to torment Harold when he was in kindergarten. They've been able to get away with their despicable crimes since Kipper, the ringleader of the group, is the spoiled nephew of Mr. Krupp.eat everything on sight.


Added DiffLines:

* AdaptationalBackstoryChange: Much like their leader, they were characters who were created after the boys used the PATSY 2000 believing it to be a copy machine. In the movie, they come alive after being drenched by the toxic residue that used to fuel the Turbo Toilet.
* MoreTeethThanTheOsmondFamily: They have vicious teeth that are perfect for eating.
* TheCanKickedHim: They have an interest in eating humans and are capable of swallowing them in a single flush.
[[/folder]]

[[folder:Evil George, Evil Harold, and Captain Blunderpants]]
[[quoteright:185:https://static.tvtropes.org/pmwiki/pub/images/nice_krupp_is_now_the_mean_captain_blunderpants.png]]
[[caption-width-right:185:[[{{Film/Us}} "We are our own worst enemy."]]]]

The Purple Potty counterparts of our heroes. Rotten to the core, they enjoy using their supervillain creation to do whatever sinister schemes they want.
----
* EvilCounterpart: Evil George and Harold are mean-spirited and wicked children who make their own comic books. However, they are actually more talented than their good counterparts, creating much better drawn comics with proper spelling and grammar. Inverted with Mr. Krupp, who is a nice principal with a good sense of humor.
* EvilTwin: That pretty much goes without saying.
* KarmaHoudini: [[spoiler: Even after being defeated by the Arthritic Avengers and being sent back to their universe, it's more than likely that they'll go back to terrorizing their world with Captain Blunderpants. They even manage to get their good counterparts arrested for the crimes they committed in the main universe]].
* WeaksauceWeakness: Probably even moreso than Captain Underpants. All you have to do is snap your fingers to turn Captain Blunderpants back into Nice Krupp.
* WouldHurtAChild: Captain Blunderpants was about to utterly pulverize George and Harold... but then [[spoiler:[[BigDamnHeroes Harold’s grandfather and George’s great-grandmother came to the rescue]]]].

[[/folder]]

[[folder:Kipper, Bugg, Loogie and Finkstein]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/kipper.PNG]]
[[caption-width-right:350:Kipper is the boy on the right with the smug grin and a key for a necklace. Bugg is the boy on the far right with dark hair, Loogie has the baseball cap and Finkstein has bangs covering his face. [[TagLine Remember that now]]]]

A group of bullies who used to torment Harold when he was in kindergarten. They've been able to get away with their despicable crimes since Kipper, the ringleader of the group, is the spoiled nephew of Mr. Krupp.
----
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Added DiffLines:

----
A collection of villains, [[MonsterOfTheWeek monsters of the week]] and other mega-maniacal weirdos that our heroes often face in their daily adventures.
----
Is there an issue? Send a MessageReason:
None

Added DiffLines:

!!Major Antagonists
[[folder:Melvin Sneedly]]
[[quoteright:184:https://static.tvtropes.org/pmwiki/pub/images/f739f0a8_df01_4c75_b65d_6d57a2e4771d.png]]
[[caption-width-right:184: Grade-A Suck Up]]
-->'''Voiced by:''' Creator/JordanPeele (movie), Jorge Diaz (animated series)

George and Harold's brainy classmate, he first appeared in book 2 and as a background character in later books, before he became more integral to the plot (and TookALevelInJerkass to boot).
----
* TheAce: The smartest student in Jerome Horwitz Elementary school.
* AdaptationalHeroism: While still annoyed with George and Harold's antics in the movie, Melvin has no plans on making them his slaves or is as much of a major villain as his book counterpart. His most evil moments is mostly his [[UnwittingPawn assistance with Professor Poopypants' anti-laughter machine for extra credit.]]
* AdaptationalVillainy: However, he ends up on the other side of the scale in the animated series. He's more selfish, arrogant, petty and ill tempered towards the boys and everyone else at the school. Most of the chaos that ends up happening in a given episode is more often then not because of his involvement.
* AnArmAndALeg: [[spoiler: The reason as to why Future!Melvin is a cyborg is because he was attacked by a swarm of Butt-erflies, sent to the future by George and Harold, that led to a fatal car crash that ruined the right side of his body]].
* ArchEnemy: He hates George and Harold as much as Mr. Krupp, if not more, because of their pranks constantly disrupting his need to uphold the rules. In fact, Book 6 has him fantasizing about making them his personal slaves.
* ArcVillain: He arguably fits this role in the first season of the animated series as every catastrophic event, along with several of the [[MonsterOfTheWeek villains of the week]], can be traced back to his inventions, his selfish desires, or ''both''. [[spoiler: He continues this role in season 2 after he and his future counterpart take over the school and do everything in their power to try and get present!Melvin accepted into Elitenati Academy]].
* BadPeopleAbuseAnimals: He tries to spank his pet hamster Sulu with a ping-pong paddle for not obeying his orders. Since he has just used a fusion machine to combine Sulu with a robot hamster and given him super strength, [[TheDogBitesBack this ends badly.]]
** This carries on in the animated series aswell. For a science project, Melvin is given a hyper intelligent chimp named 'Edwin' whom he trains to perform various intelligence themed challenges without properly rewarding him for his efforts. [[spoiler: This bites him in the butt at the end where Edwin forfeits the first place ribbon Melvin ''supposedly'' won and gives it to George and Harold for their own project. And earlier Edwin did attack him after being fed up with Melvin teasing him with the promise of ice cream]].
* BerserkButton: As the Bionic Booger Boy, he's still mostly the normal Melvin up until tissues are mentioned. [[HulkOut Things quickly went downhill from there]].
* ButtMonkey: Gets put through a HumiliationConga in Book 6 by George and Harold out of a RevengeByProxy for what he did to them. Even besides that, he tends to be on the receiving end of George and Harold's pranks.
* CassandraTruth: In ''Captain Underpants and the Attack of the Talking Toilets,'' he shows George and Harold his newest invention, the Photo-Atomic Trans-Somgobulating Yectofantriplutoniczanziptomiser (PATSY 2000), which can convert 2D images into living beings, and demonstrates by using it to turn a photo of a mouse into a real mouse. They don't believe him, and think that it's just a regular photocopier that he put a real mouse into so he could trick them. Lo and behold, when they use the "photocopier" to try and print copies of their newest comic book about Captain Underpants and the Talking Toilets, it ends up creating an army of evil Talking Toilets and the Turbo Toilet 2000. OhCrap.
* {{Catchphrase}}: "You're so immature."
** In George and Harold's comics, he has a couple: "I'm telling", and "I'm a dumb nerd".
** The movie has him saying, "I don't get it." whenever a joke occurs that the other kids find funny in which he does not.
* ChildProdigy: Vastly intelligent despite his elementary school age, and seemingly smarter than his parents.
* ADayInTheLimelight: Book 6 and 7 center around him.
* DisappearedDad: In the animated series. Unlike in the books, it’s heavily implied that it’s only him and his mother in the Sneedly household, as [[ChuckCunninghamSyndrome his father is inexplicably never seen or mentioned]].
* DitzyGenius: As impossibly smart as he is, he wasn't able to tell Mr. Krupp wore a toupee over his bald head. George sarcastically states he thought Melvin was supposed to be gifted. He also [[LawfulStupid always falls for]] the signs that George and Harold change around, including one that told him to ''[[{{Squick}} wash his hands in the toilet]]''.
* TheDragon: Frequently to Mr. Krupp whenever he's at odds with George and Harold.
** He serves this role to not only Mr. Krupp in the movie, but to Professor Poopypants.
** In the animated series, he’s served this role to at least three people so far! Most of the time, it’s Mr. Krupp, like always. Then in episode 10, he served as this to Ted Murdsley, and ''then'' at the end of the Season 1 finale, becomes this to [[spoiler:''[[MyFutureSelfAndMe his own future self]]'']]!
* EnemyMine: [[spoiler: In the season 2 finale, after learning that George and Harold aren't interested in Elitenati Academy and only want to go to summer camp, Melvin decides to stop antagonizing them for the rest of the finale and helps them defeat the out of control nanobots along with his future self]].
* EveryoneHasStandards: Despite [[ProfessionalButtKisser his constant sucking up to the teachers,]] even he looked less than pleased when Mr. Krupp and Ms. Ribble were announced to be getting married in Book 5.
** In the Season 2 finale, [[spoiler: he is horrified when his future self plans to betray George and Harold (after they just saved the day, no less) and basically ''leave them to die''.]]
* EvenBadMenLoveTheirMamas: He does love his parents and gets happy to see them in book 7 safe.
* EvilRedhead: Made more obvious in the movie, due to the book illustrations being black and white
* FreudianExcuse: It's implied that the reason why Melvin likes to kiss up to his teachers and authority figures at his elementary school is because his own parents don't pay much attention to him at home. So him getting close to the adults at his school is probably him trying to find a replacement parental figure.
* FusionDance: Book 6 has him deciding to combine himself with a KillerRobot. Unfortunately for him, he accidentally sneezes at the last second, adding his boogers to the mix and turning himself into the Bionic Booger Boy.
* FutureMeScaresMe: It's actually more along the lines of Future Me [[spoiler: ''Infuriates'' Me. As Season 2 progresses, Melvin begins to lose patience with his future self because of his complicated plans that always backfire and how he always underestimates George and Harold despite their success rate. It gets to the point that he's had enough of himself and [[FateWorseThanDeath wipes him out of existence]]]].
* GloryHound: He really enjoys having Captain Underpants' powers and being seen as the hero.
* HorribleJudgeOfCharacter: In the movie. He sucks up to and helps Professor Poopypants with his plan to eliminate laughter, despite the fact that the man is clearly ''insane''!
** In the animated series, [[spoiler: his future self is this. No matter how many times George and Harold successfully foil his convoluted schemes with their abilities and dumb luck, MelvinBorg doesn't think much of it and brushes them off as hopeless children. This is something that his present self is aware of and constantly chastises him for it]].
* HulkSpeak: In his Bionic Booger Boy form.
* ImpossibleGenius: His inventions are not only advanced, but sometimes scientifically impossible (though given what series he's in, the laws of physics and science probably only apply slightly more than they do in a Bugs Bunny cartoon). He can effortlessly create killer robots, a photocopier that turns 2D images into ''living beings,'' a [[FusionDance fusion machine]], a separation machine, a [[LaserGuidedAmnesia memory-wiping machine,]] and a time machine (which apparently was easy to build).
* InsufferableGenius: He was based off of an annoying nerd that Pilkey knew back in middle school.
* {{Jerkass}}: He has his legitimate points, but he can be a complete dick.
* JerkassHasAPoint: While he went about it in his typical obnoxious way, Melvin was pretty justified in snitching on George and Harold for ruining the science fair in book 2.
* LaserGuidedKarma: He does become a victim of this often. In book 7, for selfishly putting himself over the fate of the planet, he gets misblamed for the things that Captain Underpants did in his body & gets chased by an angry mob.
* MuggingTheMonster: In book 11, he angrily shouts at the Turbo Toilet 2000 to be quiet. Cue the Turbo Toilet 2000 chasing after Melvin.
* NerdGlasses: He's the school nerd, so it's expected that he would have glasses.
* NoSenseOfHumor: As mentioned above, he is the only one who doesn't get the joke whenever the other kids find something funny. [[spoiler: In [[WesternAnimation/CaptainUnderpantsTheFirstEpicMovie the movie]], this is because his brain lacks a "Haha-Guffaw-Chucklotamus", the part of a child's brain that controls the ability to laugh. Professor Poopypants uses him as a tool to wipe out the kids' happiness and joy.]]
** Subverted in the animated series. It’s not that he has no sense of humor, it’s that he has a '''dull''' sense of humor. According to him, videos of ''rotting food'' are “can’t miss comedy”.
* NotSoAboveItAll: In Book 4, he is seen laughing with all the other fourth graders when Professor Poopypants introduces himself to the class.
* ParentsAsPeople: Melvin's parents are shown to be too busy to spend time with their son. Melvin does, however, still love them. This is one of his redeeming qualities.
* PlotAllergy: In Book 6. Even though it’s only briefly mentioned, it’s his allergy to his family’s cat, Danderella, that causes him to sneeze when attempting to use his Combine-O-Tron 2000 on himself, turning him into the Bionic Booger Boy.
* TheRival: Comes off as this to George & Harold.
* SignificantBirthDate: According to [[WordOfGod Dav Pilkey]], Melvin was born on December 25.
* SkewedPriorities: In Book 7, [[spoiler: when he steals Captain Underpants' superpowers, he refuses to fight the Booger Bots due to his childish concern of his depiction in George & Harold's comics. Unless the boys change how Melvin is depicted, Melvin would leave the world to die]].
** In the movie, there's a moment where he actually has a hard time choosing between getting extra credit and ''surviving''.
%% * SmugSnake:
* TheStoolPigeon: Melvin is also known to be a snitch.
** He is usually the Petty Peter or the Snobby Simon depending on the book. He was the Concerned Corey (along with the Snobby Simon because while justified, he still enjoyed seeing George and Harold get into trouble) in book 2 when George and Harold sabotaged a science fair out of spite because they were not allowed to participate.
** In the movie, he even invents a device called the "Tattle Turtle 200," which exposed George and Harold for causing his Turbo Toilet 2000 invention to malfunction.
* TookALevelInJerkass: Oh yeah. He wasn't wholly unlikable in Book 2 and him breaking his deal with George and Harold was somewhat justified. Fast forward to books 6 and 7 and he's a complete {{jerkass}} when he finds out, whilst trapped in Mr. Krupp's body, about Captain Underpants' real identity and blackmails George and Harold in transferring his powers into him. Once he does manage to steal the Captain's superpowers, he refuses to help fight the Booger Bots unless George and Harold changed the comic to have him defeating Captain Underpants.
** This is TurnedUpToEleven in the animated series. [[spoiler:In the second half of the first season, he becomes so obsessed with attending his dream school, Eliteanati Academy, that he is willing to do just about ''anything'' to get accepted into it. He even [[MakeYourOwnMonster turns Bo Hweemuth into a literal monster so the kids will still fear him]], all so Mr. Krupp would write a recommendation letter to said academy for him, but [[EvenEvilHasStandards even]] ''[[EvenEvilHasStandards Mr. Krupp]]'' [[EvenEvilHasStandards thought Melvin had gone too far]]! Then in the season finale, [[WhamEpisode he gets Mr. Krupp fired, George and Harold expelled, and takes over the school with his future self]]!]]
* VillainousCrush: Has one on [[CanonForeigner Erica Wang]] in the animated series. But given his reputation, it’s highly unlikely that she reciprocates it.
[[/folder]]

[[folder:Professor Pippy P. Poopypants/Tippy Tinkletrousers]]
[[quoteright:206:https://static.tvtropes.org/pmwiki/pub/images/latest__3_jpg.png]]
[[caption-width-right:206:[[BerserkButton Don't make fun of]] [[SchmuckBait his name.]]]]
-->'''Voiced by:''' Nick Kroll

A brilliant scientist from New Swissland who turned to villainy after being made fun of because of his ridiculous name one too many times by the world and children of all ages. He is a recurring villain that the boys and Captain Underpants have to face on various occasions.
----
* AdaptationNameChange: Renamed "Pee Pee Diarrheastein Poopypants Esquire" in the movie, which, props to the creators of the film for taking a name like "Professor Poopypants," and somehow making it ''so much worse.''
* AdaptationalVillainy: In the movie, he isn't [[SanitySlippage driven to craziness]] from George and Harold's tricks, he is already a villain to begin with. His backstory reveals he'd already snapped when [[spoiler:the presenters at the Nobel prize ceremony were too busy laughing at his name to give him his well-deserved award]].
* AffablyEvil: In the movie, he's quite cheery as far as mad scientists go, even if he wants to wipe laughter off the face of the planet. Until you make fun of his name...
* AlasPoorVillain: Sympathy for him may vary since he does lose sight of his goal (as well as his sanity) as the books go on. But when it all comes down to it, he was a legitimately brilliant man with actual qualifications. Heck, he designed a shrink ray and a growth ray to get rid of the world's garbage problems (by shrinking it to nothingness) and ''solve world hunger'' (by making all the food super-sized). All he originally wanted was to teach people about science, only for them to not give two shits because he had a funny sounding name. Even George and Harold themselves had to admit that his villain origins could have been avoided if they didn't make fun of him.
* AlliterativeName: Pippy Pee Pee Poopypants, and later Tippy Tinkletrousers.
* AsLongAsItSoundsForeign: Hails from the country of New Swissland, where everybody has ridiculous names.
* BagOfHolding: His briefcase in TheMovie.
* BeenThereShapedHistory: His meddling with time was what inadvertently wiped out the dinosaurs, caused the Ice Age, and creates the Big Bang that stated the universe.
* BerserkButton: He doesn't take people making fun of his name very well, as the whole of Jerome Horvitz learned the hard way. In the movie, the woman presenting Nobel Prizes learned this ''much'' earlier.
** In the movie, he doesn't like children laughing to the point that it becomes part of his EvilPlan to stop kids from laughing forever.
* BigBad: Of Book 4, 9, and 10 and in TheMovie.
* ButtMonkey: Constantly made fun of in his debut. He's also a ButtMonkey in the movie.
* CardCarryingVillain: He doesn't even ''try'' to be subtle in the movie. [[HorribleJudgeOfCharacter Captain Underpants has a good feeling about him anyway.]]
* ChronicBackstabbingDisorder: During his reappearance, he abuses time-travel twice to solve his problems, creating "clones" of himself. All three clones betray the others at the first opportunity. When Harold and George are arguing about how to get home, one of them points out that they can't trust him, since '''he can't trust ''himself'''''.
* ComicallyMissingThePoint: At the end of Book 4, he decides to take George and Harold's advice to change his name so people won't laugh at him anymore. He decides to rename himself "Tippy Tinkletrousers".
* TheComicallySerious: He wants to be taken seriously by the scientific community, but it's not exactly easy with a name like "Pippy P. Poopypants". It really doesn't help that he doesn't ''realize'' it's an {{Unfortunate Name|s}}, since everyone in his country has a silly name.
* TheCynic: In the movie. He claims that a student's dream of world peace is "unattainable", and scoffs at Melvin's claim that "real power comes from within".
* DeadpanSnarker: The movie gives him a few snarky moments when he's not ChewingTheScenery like it's going out of style.
--> "Oh, look at this. We've got a grade-A suck-up. Good to know, good to know."
* EinsteinHair: He has poofy hair that matches his MadScientist look.
* EvilIsHammy: See LargeHam.
* FreudianExcuse: People laughing at his name all the time led him to villainy.
* GenreBlindness: In the books, he took up a position as a teacher at an elementary school, believing that children were sweet and innocent and wouldn't laugh at his name. He was wrong. ''So very, very wrong.''
* HerrDoktor: The movie gives him a heavy German accent.
* {{Hypocrite}}: He wants to rid the world of laughter, yet he frequently indulges in [[EvilLaugh evil laughter]], and even has a film of bloopers that he finds amusing.
* AnIcePerson: He created a freeze ray in Book 8.
* ImpossibleGenius: Has mastered sizechanging technology and time travel.
* InsufferableGenius: He's pretty egotistical about his inventions.
* KarmicDeath: [[spoiler: For attempting to blow up the planet, Tippy gets killed off permanently]].
* KilledOffForReal: [[spoiler:In book 9, three separate times at that.]]
* LargeHam: Voiced by Nick Kroll, and it shows.
* MadScientist: He likes to invent, but he's not so mad until his SanitySlippage.
** Played straight in TheMovie at his insistence:
-->'''George:''' (''reading his resume'') It says here that you were a "genius inventor"?
-->'''Poopypants:''' (''slamming a mace down into the desk'') '''''Mad''''' genius inventor!
* MakeMyMonsterGrow: His Goosy-Grow 4000 can make things bigger, including his MiniMecha which he turns into a HumongousMecha.
* MeaningfulRename: After attempting to give everyone in the world silly names, Professor Poopypants is advised by George and Harold to change his own name instead. Calling himself Tippy Tinkletrousers did not improve his situation.
* NiceJobFixingItVillain: When he goes back in time, he accidentally prevents Captain Underpants from ever existing, resulting in a BadFuture where all of the threats that Captain Underpants had stopped are now in play. He realizes his mistake and goes to fix it.
** In the movie, [[spoiler:He does this ''twice in a row''. The first time was when he had the Turbo Toilet 2000 "eat" Captain Underpants. In doing so, he exposed CU to the pretty much radioactive leftovers from the school cafeteria, and it ultimately results in him getting ''real'' superpowers. The second time is when he's seemingly won after erasing George and Harold's sense of humor. He mentions the planet Uranus, which triggers the memory of how George and Harold first met, and gets them laughing again, which destroys the Anti-Humor machine and undoes its effects on the rest of the school]].
* OmnicidalManiac: Attempted to [[spoiler: destroy the planet in book 10]].
* OverarchingVillain: The most recurring villain of the books.
* RecurringBoss: He's the one villain who keeps coming back over and over.
* SanitySlippage: From well-meaning, brilliant scientist hoping to solve all the problems in the world or at least to teach young children the joy of science, to a crazy person hoping to give everyone in the world a name as silly as his, [[spoiler: to a balls-out lunatic willing to do anything necessary to kill Harold and George, to an OmnicidalManiac]]. Whoa! This is even more prominent in the movie, where [[spoiler: he wants to eliminate all humor so no one will ever laugh at his name.]]
* ShrinkRay: His Shrinky-Pig 2000.
* SignificantBirthDate: Of the ironic variety in the movie. Thanks to a FreezeFrameBonus, you see on his resumé that he was born on ''AprilFoolsDay'', of all days!
* ShutUpKirk: In the movie, when George and Harold try to talk him down.
-->'''George:''' Your problem isn't that people laugh at you, but that you can't laugh at yourself.\\
'''Poopypants:''' Oh, really, [[Series/TheOprahWinfreyShow Oprah]]? Is that my problem?!
* StatingTheSimpleSolution: It takes two fourth graders to point out that it ''might'' have been easier to just change his name instead of holding the world hostage with shrink rays and HumongousMecha. He claims he never even thought of that.
* ThenLetMeBeEvil: George and Harold write a comic book about him trying to take over the world, and he finds a copy of it, suffers a psychotic break after reading it, and decides to actually take over the world. [[NiceJobBreakingItHero Nice job breaking it, George and Harold!]]
** In the movie:
-->'''Poopypants:''' So George and Harold want a super villain, huh? Well ask and he shall ''RECEIVE''!!
** In the movie, he even changes his outfit to match the one that George and Harold made for the comics.
* UnfortunateNames: Just read it. The new name he gives himself (Tippy Tinkletrousers) is only slightly less embarrassing.
** In the movie, it's [[AdaptationNameChange changed]] to Pee Pee Diarrheastein Poopypants Esquire, which is ''even worse.''
* VillainProtagonist: Of Book 9.
* WouldHurtAChild: He was all too willing to hurt George & Harold in book 4, 9, and 10.
[[/folder]]

!!Introduced in the Book Series
[[folder:Evil George, Evil Harold, and Captain Blunderpants]]
[[quoteright:185:https://static.tvtropes.org/pmwiki/pub/images/nice_krupp_is_now_the_mean_captain_blunderpants.png]]
[[caption-width-right:185:[[{{Film/Us}} "We are our own worst enemy."]]]]

The Purple Potty counterparts of our heroes. Rotten to the core, they enjoy using their supervillain creation to do whatever sinister schemes they want.
----
* EvilCounterpart: Evil George and Harold are mean-spirited and wicked children who make their own comic books. However, they are actually more talented than their good counterparts, creating much better drawn comics with proper spelling and grammar. Inverted with Mr. Krupp, who is a nice principal with a good sense of humor.
* EvilTwin: That pretty much goes without saying.
* KarmaHoudini: [[spoiler: Even after being defeated by the Arthritic Avengers and being sent back to their universe, it's more than likely that they'll go back to terrorizing their world with Captain Blunderpants. They even manage to get their good counterparts arrested for the crimes they committed in the main universe]].
* WeaksauceWeakness: Probably even moreso than Captain Underpants. All you have to do is snap your fingers to turn Captain Blunderpants back into Nice Krupp.
* WouldHurtAChild: Captain Blunderpants was about to utterly pulverize George and Harold... but then [[spoiler:[[BigDamnHeroes Harold’s grandfather and George’s great-grandmother came to the rescue]]]].

[[/folder]]

[[folder:Kipper, Bugg, Loogie and Finkstein]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/kipper.PNG]]
[[caption-width-right:350:Kipper is the boy on the right with the smug grin and a key for a necklace. Bugg is the boy on the far right with dark hair, Loogie has the baseball cap and Finkstein has bangs covering his face. [[TagLine Remember that now]]]]

A group of bullies who used to torment Harold when he was in kindergarten. They've been able to get away with their despicable crimes since Kipper, the ringleader of the group, is the spoiled nephew of Mr. Krupp.
----
* AlliterativeName: '''K'''ipper '''K'''rupp.
* BlackBestFriend: Bugg is technically this to the other boys.
* BlindingBangs: The book illustrations show Finkstein with these.
* BringMyBrownPants: Finkstein wets his pants after finding dozens of spiders in his locker, courtesy of George and Harold.
* {{The Bull|y}}ies: They get cheap thrills off of tormenting kindergartners.
* {{Butt Monkey}}s: Kipper & his stooges always fall victim to Kindergarten George & Harold's pranks.
* TheDividual: The four of them are always seen together and don't have many distinct personality traits aside from being sadistic jerks.
* DrivenToMadness: When Tippy Tinkletrousers travels back in time to the exact moment and location of their HeelFaceTurn in the original timeline, they see his time-travel machine (which is shaped like a giant pair of pants). They immediately think they're seeing "The Haunted Pants of Wedgie Magee" in the flesh, and go completely insane.
* DumbJock: Kipper is a jock, but he's an idiot as well.
* DumbMuscle: Clearly more brawn than brain--they beat up kids left and right, but get outwitted by a pair of prank-pulling kindergartners. George notes that Kipper's only weakness is that he's "kinda dumb".
* HeelFaceTurn: After being [[ScareEmStraight scared straight]] by "The Haunted Pants of Wedgie Magee", they return all of the stolen money to the kindergartners they robbed and never bully anyone else for as long as they live.
* HumiliationConga: They get put through a long extended one throughout Book 9 by George and Harold as retribution for bullying the kindergartners.
* {{Jerkass}}: They are assholes, especially to kindergartners.
* JerkJock: Kipper is on the school wrestling team and enjoys beating up kindergartners.
* KarmaHoudiniWarranty: Up until George moved to Piqua, Ohio, they would get away with tormenting kindergartners because Mr. Krupp was not at all suspicious of them. They did, however, [[LaserGuidedKarma fall victim to George & Harold's pranks]].
* MindRape: See DrivenToMadness above.
* NiceHat: Loogie wears a baseball cap.
* ScareEmStraight: George and Harold put them through a series of increasingly brutal pranks to make them think they've been cursed by a ghost called Wedgie Magee as punishment for their bullying.
* ScrewTheRulesIHaveConnections: Kipper and his gang get away with bullying smaller kids out of their lunch money and giving them wedgies because his uncle is Mr. Krupp.
* SmallRoleBigImpact: They only have a significant appearance in Book 9 but their presence is an important factor in George and Harold's lives; they not only become best friends because of the bullies but they also would develop their lifelong careers as comic book creators and professional pranksters.
* StarterVillain: Chronologically, they were the first "villains" defeated by George and Harold. They don't actually appear until Book 9.
* TeensAreMonsters: Preteens, actually. They're sixth graders who take pleasure in bullying younger kids.
* UnmanlySecret: Kipper doesn't actually have one, but George and Harold [[InvokedTrope make it look like he does]] by secretly putting dolls, dresses and a friendship bracelet kit in his locker, getting his friends to laugh at him.
* VillainousGlutton: They intimidate a pizza delivery guy into giving them the pizza that "Wedgie Magee" bought for the kindergartners and [[KickTheDog gleefully eat it all in front of them.]] George and Harold get wise to this and trick them into eating pizza with [[BlazingInfernoHellfireSauce double ghost chili peppers]] on each slice.
* VitriolicBestBuds: Bugg, Loogie and Finkstein find it hilarious when Kipper becomes the target of several pranks by "Wedgie Magee". They stop thinking it's funny when [[MoralMyopia weird things start happening to]] ''[[MoralMyopia them.]]''
* WouldHurtAChild: All four of them are notorious bullies whose favorite targets are kindergartners.
[[/folder]]

!!Introduced in the Animated Series

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