History Characters / CaptainUnderpantsVillainsOfTheCUUniverse

** In the movie he leaves Ms. Anthrope (who is [[RunningGag stuck on hold]]) alone, and refuses to get rid of the part of the brain that causes laughter simply because humans need it to survive.

* KickTheSonOfABitch: As principal, he decides to rehire Krupp by making him ''vice'' principal and subjecting him to the most difficult 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.

'''Voiced in Hungarian by:''' Creator/CsongorSzalay

'''Voiced in Japanese by:''' Hiroshi Iwasaki

'''Voiced in Japanese by:''' Kengo Takanashi\\

* NotSoHarmlessVillain: Despite his ridiculous name and appearance and being a ButtMonkey for most of the time, he is a highly intelligent, ruthless, violent and dangerous [[Evil MadScientist]] whose inventions are powerful enough to put the world in peril.

* NotSoHarmlessVillain: Despite his ridiculous name and appearance and being a ButtMonkey for most of the time, he is a highly intelligent, ruthless, violent and dangerous EvilScientist whose inventions are powerful enough to put the world in peril.

* 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.''

** In the movie he leaves the lady stuck on hold alone and refuses to get rid of the part of the brain that causes laughter simply because humans need it to survive.

* {{Catchphrase}}: "You're so immature."

* CatchPhrase: The only thing they ever say is "YUM, YUM, EAT 'EM UP!"

* CatchPhrase: "ROBES RULE!"

* FelonyMisdemeanor: Despite Captain Blunderpants committing all kinds of high-end robberies and larceny, what ''actually'' puts him on the police's radar is "grand theft pizza".

* BrokenRecord: You'll know they're coming if you hear an endless chorus of "YUM, YUM, EAT 'EM UP! YUM, YUM, EAT 'EM UP!"

* 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.

* LogicalWeakness: Since the only thing they do is mindlessly eat, they can be defeated by feeding them something poisonous, such as FoulCafeteriaFood.

* InsufferableGenius: He was based on an annoying nerd that Dav Pilkey knew back in middle school (given the pseudonym “Michael Sneedman”), who always got perfect grades, would rub them in the faces of the other kids, and would go so far as to grade his own test papers and write “100%”, “A+”, and “Keep up the great work, Michael!” on them.

* InsufferableGenius: He was based on an annoying nerd that Dav Pilkey knew back in middle school, who always got perfect grades and would rub them in the faces of the other kids.

* FloweryInsults: The animated series shows Melvin using a variety of creative insults whenever he's speaking to the boys, his peers, or even Krupp.

* VillainousCrossdresser: They're all male-coded (although the book tries to obfuscate the issue by not referring to Jennifer using pronouns) but dress up as feminine cafeteria ladies.

* BatOutOfHell: They are part bat afterall.