Principal Krupp/Captain Underpants

## For Principal Krupp:

**Principal Benjamin "Benny" Krupp**, better known as **Mr. Krupp** or just **Krupp**, is the titular deuteragonist of the *Captain Underpants* franchise, And He Is A One Of The Main Protagonist (Along With Manny, SpongeBob, Felipe, Fleegle & The Mayor) In Postman Pat The Movie 2 (2024) & He Loves Ben Tennyson As His Favorite Kid Of All Time.

He is the overweight, middle-aged, grumpy principal of Jerome Horwitz Elementary and the alter-ego of the superhero **Captain Underpants**. He is widely known as the Worst Principal in the World.

In the film adaptation, he was voiced by Ed Helms, who also played Andy Bernard in *The Office*, the Once-Ler in the 2012 film adaptation of *The Lorax*, Number Two in *Meet Dave*, and Brad Gurdlinger in *We're the Millers*.

In *The Epic Tales of Captain Underpants*, he is voiced by Nat Faxon.

In the Japanese dub of the film adaption, he was voiced by Yatsunori Matsumoto, who also voiced Double in the Japanese dub of *Mega Man X4*

In the scholastic audiobook series, he is voice by Len Forgione.

## Personality

Mr. Krupp is a very mean, sour, grumpy, harsh, bad-tempered, strict, sadistic, selfish, aggressive, evil, angry and bossy principal who hates children, especially George Beard and Harold Hutchins, because of their constant pranks and rebellious behaviour. He has Melvin Sneedly as his snitch as well giving him extra credits for his efforts of caught footage of Harold and George's troubles. According to Harold, Mr. Krupp hates all sources of fun like comic books, recess, christmas, carnivals and even (allegedly) kittens. He has a romantic crush with the school's lunch lady, Edith.

However, his personality is completely polar as Captain Underpants. He's kind, jolly, loyal yet dim witted. Still he saves the day and is loyal to his sidekicks George and Harold.

## Appearance

As Mr. Krupp, he wears a white short-sleeved dress shirt with a brown tie, green slacks, and black leather shoes, along with a toupee. Once he becomes Captain Underpants, he strips to his underpants and removes his toupee, and dons a red cape.

## History

### Role in the books

One day, after George and Harold ruined a big football game, they were reported to Mr. Krupp's office the next day. Mr. Krupp showed them their pranks on tape and wanted to find out who was responsible for the fiasco. George and Harold pleaded that they did not want to be killed for the rest of their lives, so Mr. Krupp (who put up with them for years) blackmailed the two boys to do his chores and not smile or he will threaten to give the tape to the football team, essentially using them for child labor. He even sadistically asked their teachers to give them extra homework.

After enduring Mr. Krupp's punishments, George ordered a 3D Hypno-Ring which is delivered 4–6 weeks later after he and Harold suffered the brutal and intense punishment by Mr. Krupp. He and Harold then used it on Krupp to get him to forget about their punishments, such as giving the tape of George and Harold to George and Harold themselves and replaced it with Harold's little sister's video tape of Boomer the Purple Dragon (a spoof of *Barney & Friends*) sing-a long videos.

They proceeded to get Krupp to do ridiculous acts, culminating in making him believe he was their comic book creation, Captain Underpants. After pursuing Captain Underpants throughout the city and helping him defeat the villain Dr. Diaper, George and Harold managed to revert Krupp to normal by pouring water on his head before Krupp angrily tells the boys that he is going to give the tape to the football team. However, this had the side-effect of Krupp always transforming into Captain Underpants every time he hears someone snap their fingers.

Mr. Krupp turns into Captain Underpants several times after this, going on many adventurers and obtaining real superpowers. He battles various foes, such as Professor Poopypants, Wedgie Woman, the Turbo Toilet 2000, Zorx, Klax & Jennifer, Captain Blunderpants, Evil George Beard, Evil Harold Hutchins, Melvin Sneedly and Sir Stinks-A-Lot.

Despite the frequency of transformations, Mr. Krupp never figures out that he is Captain Underpants.

### Role in the movie

In the film, Mr. Krupp is bent on busting George and Harold of their multiple pranks they had done to him and the other staff, though he finds it upsetting that he hasn't gotten any evidence to have them punished. He also hates their Captain Underpants comics as he forbids them from creating any in the school grounds, even tearing up their latest one detailing the origins of the superhero, much to their horror.

George and Harold's pranks come to an apparent end after they tamper with a toilet invention called the Turbo Toilet 2000 made by the school's local snitch Melvin Sneedly. With that in mind, Krupp happily decides to place George and Harold in separate classes in order to annihilate their friendship and their pranks. But before Krupp could fill up the paperwork to make it happen, George hypnotizes Krupp with a 3D Hypno-Ring he received out of a cereal box; the boys see that Krupp bears a resemblance to Captain Underpants without his toupee and command him to be Captain Underpants. However, this quickly backfires when Captain Underpants begins causing some problems around Piqua, thinking he is a real superhero with superpowers.

The boys discover that they can turn Captain Underpants back into Krupp by splashing water on him and can turn him back by snapping their fingers. Believing that Krupp will continue with his plan to separate them, they decide to settle with Captain Underpants but insist that he be dressed up as Krupp under the pretense of a secret identity, to which Captain Underpants agrees. His sudden personality change even manages to attract the attention and affection of the school's shy lunch lady Edith.

The boys even learn (after exploring his house) that Krupp might not be as evil as they thought, but has rather been lonely for most of his life. Eventually, Krupp turns back into himself after a rainstorm occurred, learning that George and Harold have started a fair at the school without his knowledge. Having enough of their antics, Krupp angrily sentences the two boys to separate classes, much to their discomfort. Despite being satisfied that he finally punished the boys as promised, Krupp finds himself moping in boredom after looking at the casserole that Edith made for him, feeling so depressed that he never got a chance to ask her out on a date.

During the fight against Professor Poopypants and the Turbo Toilet 2000, the boys change Krupp into Captain Underpants to help them fight off the villains. Unfortunately, Poopypants gets the Turbo Toilet 200 to swallow Captain Underpants whole before taking George and Harold as hostages. However the boys' sense of comedy managed to help crash the Turbo Toilet's system, allowing Captain Underpants to escape after consuming the rotten leftovers inside.

The leftovers also allowed Captain Underpants to obtain superpowers to finally defeat Poopypants, becoming a true hero to the public. However, George and Harold destroy the 3D Hypno-Ring in an attempt to permanently change him back into Krupp, as they know that they can't control Captain Underpants. Feeling sorry for Krupp because he has no friends, the boys set him and the lovesick Edith up on a date. This made Krupp have a change of heart, even returning the comics he took away from George and Harold while admitting that they are funny.

However, the toxic waste from the Turbo Toilet 2000 transforms all the toilets into an army of Talking Toilets which attack the restaurant at which Mr. Krupp and Edith are dining. Upon snapping his fingers while calling for a check after seeing a toilet eating up a citizen in horror, Mr. Krupp once again becomes Captain Underpants, carrying George and Harold away to help him fight the Talking Toilets, which confuses George, as he thought destroying the ring would destroy the hypnotism.

### Role in the Netflix series

Mr. Krupp is now portrayed as incredibly stupid and mean. He has also developed a love for guacamole and salami, though he developed salami intolerance due to eating it too fast. Krupp's shown to be not very bright, even as a principal, and has always been a bully. However, there are still times where he is somewhat decent, though it's usually because it would benefit him, such as when he allowed the students and faculty of Jerome Horwitz Elementary School to go to space so he could have a chance to outshine his high school rival.

In "The Soggy Salvation of the Swirling Sweatnami," it is revealed his childhood was terrible. His mother, Bernice Krupp, verbally abused him and only saw him as a disappointment. When Mr. Krupp entered the school talent show and tried to perform as a rapper, Bernice humiliated him and encouraged his peers to do the same. This incident led Benjamin to become the spiteful principal he is today.

As a teenager, he was under the impression he competed with Moxie Swaggerman, despite her barely being aware of his existence. When Mr. Krupp meets Moxie again in The Epic Tales of Captain Underpants in Space!, he attempts to serve as the schoolship's leader but fails horribly, even sending the School Spaceship to a planet called Utopiqua and their crash landing which would got everyone almost killed.

In "The Costly Conundrum of the Calamitous Claylossus", Mr. Krupp enlists Melvin Sneedly's assistance in terrorizing the kids by making rumorous student Bo Hweemuth his shark in exchange for keeping them straight with the promise of getting Melvin into his dream school.

He will hire literally anybody to be a teacher, even a baby, as shown in "The Jarring Jerkiness of Judge J.O.R.T.S.".

He even wanted absolute power as in "The Crazy Caustic Spray of the Contagious Cruelius Sneezer", when he pretended to become an emperor on a field trip to Rome.

He even abandon George, Harold and their friends and Mr. Meaner in the woods in “ The Bad Beat of the Blah Borelock” to get rid of them.

In the interactive special, he even try to destroy George and Harold’s treehouse once all for all, which would be bad for the environment and is also a waste of money and shelter.

In the hallowen special, he tried to help Melvin to cancel Halloween and later made it illegal, so he have peace and quiet. In the same special, he stole a bunch of avocados to make a relaxing guacamole bath and later wanted to turn George and Harold in for Hack-O-Ween.

In the christmas special, he has George and Harold to directed the christmas play so he won’t have to, which the boys to switch the play's focus to Blissmas. After the show is over, the parents are upset and lash out at Mr. Krupp. Mr. Krupp then forces George and Harold to perform manual labor by cleaning up the toilets for punishment.

Whenever he transforms back from Captain Underpants, he doesn't seem to know why he is in his underwear after being soaked in water.

A brainwashed supervillain of Captain Underpants called *Captain NanoPants* after being taken over by the Nanobots who only appears in *The Taxing Trauma of the Treacherous Tattle Trials*.

A dream version of Captain Underpants called *Captain Ultrapants* who only appears in *The Monstrous Mayhem of the Massive Melviathan*.

## Differences

* In the books, Mr. Krupp did not reform and he remained being grumpy, mean and antagonistic unlike in films where he had a change of heart near the end of the film, becoming less grumpy in the film.
* The film gives Mr. Krupp redeeming qualities that are absent in the books: Here, he has a crush on Edith the lunch lady, his antagonistic traits are arguably a facade to hide his loneliness, and is amused by the boys' comic about Captain Underpants, the latter fact providing an explanation on how he acts as his alter-ego to begin with.

## Trivia

* Mr. Krupp transforms into Captain Underpants whenever he hears someone snap their fingers, and reverts back to normal when someone pours water on his head.
	+ This even extends to being showered with kisses from Ms. Anthrope, as seen in the sixth book.
	+ As seen in the eighth book, as long as water is on his head, he cannot transform into Captain Underpants.
	+ Mr. Krupp in the film can instantly transform back into Captain Underpants with the snap of a finger, even if he has just gotten soaked. In the film, the only exception to this rule is if it is currently raining.
* Mr. Krupp is said to have been inspired by Dav Pilkey’s high school principal, who would reprimand Dav for drawing cartoons in class by telling him, “Artists are a dime of dozen, and you will never make a living as an artist, David.”
* Despite his cruelty, Mr. Krupp does have a soft spot for his nephew Kipper, as he punishes anyone who seemingly bullies him, despite it being obvious that Kipper is the bully.
* His full name, Benny Krupp, is a pun on the word "bankrupt."
* Mr. Krupp is occasionally fair to George and Harold. For example, in *Invasion of the Naughty Cafeteria Ladies from Outer Space*, he refused to punish them because the lunch ladies didn't have enough evidence to prove of their pranks, though he would change his mind and reprimanded them later on. Also, in *Attack of the Talking Toilets*, Mr. Krupp fears of losing his job due to the attack of the talking toilets, but George and Harold manage to get their robot to repair the school's damages, and Krupp cancels their suspension and places them as temporary principals for the day as a reward (although this could be attributed to desperation, since he would be held responsible for the damages.)
* In *Captain Underpants and the Sensational Saga of Sir Stinks-a-Lot*, Mr. Krupp lost his ability to turn into Captain Underpants. The book stated that there are two possible reasons for this: the electromagnetic explosion that resulted from feeding Sir Stinks-a-Lot soda, Mentos, and pop rocks had erased the hypnotic spell from Mr. Krupp's brain, or Sir Stinks-a-Lot's Super-Power-Juice-ectonomy took away Mr. Krupp's superpowers.
	+ It is possible Captain Underpants was not erased from Mr. Krupp's mind in the book series, because in *Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers*, Old Mr. Krupp was able to turn into Captain Underpants, even after the events of *Captain Underpants and the Sensational Saga of Sir Stinks-A-Lot*.
* Despite Mr. Krupp disapproving of the *Captain Underpants* comics, he knows exactly how Captain Underpants behaves, as evidenced by his near-exact impression of the hero while hypnotized. In the film, Mr. Krupp reveals that he has read the comics, which may be how he knows everything about Captain Underpants.
* Dav Pilkey, the author of the book series, greatly approved Mr. Krupp's character development into a more likable character in the film that he wished to give the character the same development in his books back then.
* His personality is very similar to Professor Pamplemousse from *Sidekick* and Mr. Wilter from *ChalkZone*.
* In *The Wrath of the Wicked Wedgie Woman,* Mr. Krupp is shown to be Jewish, but in tv series, he celebrates Christmas with no reference of Jewish rituals. Many fans were furious, believing it was demeaning to Jewish readers and the book series itself.
* His hatred towards Geroge and Harold reach’s the point where he tried to get rid of them (or almost getting them killed), for example in *The Tyrannical Retaliation of the Turbo Toilet 2000,* he revealed Yesterday George and Yesterday Harold's location to the Turbo Toilet 2000. Which led the boys to being almost killed by the Turbo Toilet 2000, if it were not for Tony, Orlando, and Dawn.
	+ Despite that, the Turbo Toilet 2000 still devour Mr. Krupp even thought he told him where Yesterday George and Yesterday Harold lived. And after the Turbo Toilet 2000 get killed by Tony, Orlando, and Dawn, Mr. Krupp gets arrest by the cops due they assume that Mr. Krupp is another teacher running around in his underwear thinking he is dreaming. Despite the fact he should got arrest for nearly getting Yesterday George and Yesterday Harold killed by the Turbo Toilet 2000 for revealing their location to him.
* Mr. Krupp would tried to separate George and Harold in anyway somehow.
	+ In book 11, When George and Harold flunked their tests, Mr. Krupp was greatly overjoyed that Harold flunked the fourth grade, because he and George would no longer be in the same grade. By sabotaging them from making up their grades with no make-up tests and canceling the final exams.
	+ In the movie, he had George and Harold in separated classes in an attempt to get rid of their friendship.
	+ In the TV series, he put a fence in between George and Harold to turn the boys against each other.
* Mr. Krupp had a habit of making up rules and writing them in the rulebook, which ultimately led to his dismissal from the program. When Melvinborg expelled George and Harold for violating the rules in the same book, he was struck by bureaucracy due to the fact that the rules that were broken were unofficial and, therefore, the students did nothing wrong.
* Mr. Krupp overeats avocado, guacamole, salami, cheese, and goat milk in the television program.
* He uses the phrase "B-B-Bubba bobba hob-hobba-hobba wah-wah" when he is at a loss for words.
	+ Interestingly, his nephew Kipper says the same phrase in the ninth Captain Underpants book after he and his companions went insane after seeing Tippy Tinklepants and his enormous pants.
* He has inadvertently transformed himself three times into Captain Underpants. Once in Book 5, twice in The Heartbreaking Havoc of the Haunted Hack-A-Halloween, and once at the conclusion of the movie.
	+ Nevertheless, it is conceivable that he added two and two together and intentionally snapped.
* He, Captain Underpants, George, and Harold are the only characters to appear in every episode of The Epic Tales of Captain Underpants.
* As shown in the tv series, he has no drivers license, however in the movie, he does.
* Even though he is ignorant that he is Captain Underpants, he is splashed with water multiple times during a combat with an opponent. When this happens, Mr. Krupp gets angry and confused as to what is going on, where he is, and why he is out in public wearing his own curtains around his neck and in his underwear.
* The scenes where we go inside Krupp's mind in some of the episodes of the TV Series and see his humanoid emotions might be a parody of the Pixar film *Inside Out*.

## For Captain Underpants

**Principal Benjamin "Benny" Krupp**, also known as **Captain Underpants**, is the titular deuteragonist of the popular franchise of the same name, And He Is A One Of The Main Protagonist (Along With Manny, SpongeBob, Felipe, Fleegle & The Mayor) In Postman Pat The Movie 2 (2024).

He is a superhero comic book character created by George Beard and Harold Hutchins who later became real after the duo hypnotized their principal, Mr. Krupp, into believing that he is Captain Underpants. The hypnotic suggestion became permanent after George and Harold doused his head with water. Now, whenever Mr. Krupp hears the sound of a finger snap, he is instantly brainwashed into becoming Captain Underpants once again.

In the film, he is voiced by Ed Helms, who also plays The Once-Ler in *The Lorax*.

In the Netflix series, he is voiced by Nat Faxon.

In the scholastic audiobook series, he is voice by Len Forgione.

## Personality

Mr. Krupp is a very mean, sour, grumpy, bad-tempered, strict, sadistic, selfish, evil, angry and bossy principal who hates children, especially George and Harold, because of their constant pranks and rebellious behaviour. He has Melvin Sneedly as his snitch as well giving him extra credits for his efforts of caught footage of Harold and George's troubles. According to Harold, Mr. Krupp hates all sources of fun like comic books, recess, Christmas, carnivals and even (allegedly) kittens. He has a romantic crush with the school's lunch lady, Edith.

However, his personality is completely polar as Captain Underpants. He's kind, jolly, loyal yet dim witted. Still, he saves the day and is loyal to his sidekicks George and Harold.

## Appearance

As Mr. Krupp, he wears a white collar t-shirt with a brown tie and green slacks, along with a toupee. Once he becomes Captain Underpants, he strips to his underpants and removes his toupee, and dons a red cape.

## History

### Role in the books

Captain Underpants is a comic book character who was made up by George Beard and Harold Hutchins, two mischievous, yet kind hearted boys to attended Jerome Horwitz Elementary School, a school which discouraged creativity.

Once, Mr. Krupp, the sadistic and grouchy principal, caught George and Harold on a video proving that they ruined the Horwitz Knuckleheads football Game. As a punishment, he blackmailed them by threatening to show the tape to their parents and the angry football team unless they completely behaved themselves, received lots of homework and spent all their free time doing chores for him like washing his car, clipping his finger and toenails, and vacuuming his house.

George and Harold had enough and bought a 3D-Hypno Ring. They planned to hypnotize Mr. Krupp into giving them the tape back. The two went into his office the next day, tricking Mr. Krupp into staring into the ring by telling him that he'll see a hidden picture if he stares long enough. Krupp begins getting sleepy, and eventually becomes completely hypnotized. George and Harold tell Krupp to obey their every command, and he agrees to do so.

After getting back the tape, the two decide to have some fun with their hypnotized principal, first making him think he's a chicken, then a monkey. After this, they tell him to think he's Captain Underpants. Mr. Krupp complies and begins smiling as he immediately strips down to his underwear. He rips the red curtain off his window and uses it as a cape, and begins stands triumphantly. The two found it funny, until he ran off and actually tried to fight crime.

After accidentally defeating Dr. Diaper, George and Harold dunk water on Captain Underpants' head, accidentally making the hypnosis permanent. Now, Mr. Krupp turns back into Captain Underpants whenever he hears fingers snap. Also, whenever "Captain Underpants" gets his head wet, he transforms back into his usual, grumpy self.

Mr. Krupp turns into Captain Underpants several times after this, going on many adventurers and obtaining real superpowers. He battles various foes, such as Professor Poopypants, Wedgie Woman, the Turbo Toilet 2000, Zorx, Klax & Jennifer, Captain Blunderpants, Evil George Beard, Evil Harold Hutchins, Melvin Sneedly and Sir Stinks-A-Lot.

### Role in the movie

In the film, Mr. Krupp is bent on busting George and Harold of their multiple pranks they had done to him and the other staff, though he finds it upsetting that he hasn't gotten any evidence to have them punished. He also hates their Captain Underpants comics as he forbids them from creating any in the school grounds, even tearing up their latest one detailing the origins of the superhero, much to their horror.

George and Harold's pranks come to an apparent end after they tamper with a toilet invention called the Turbo Toilet 2000 made by the school's local snitch Melvin Sneedly. With that in mind, Krupp happily decides to place George and Harold in separate classes in order to annihilate their friendship and their pranks. But before Krupp could fill up the paperwork to make it happen, George hypnotizes Krupp with a 3D Hypno-Ring he received out of a cereal box; the boys see that Krupp bears a resemblance to Captain Underpants without his toupee and command him to be Captain Underpants. However, this quickly backfires when Captain Underpants begins causing some problems around Piqua, thinking he is a real superhero with superpowers.

The boys discover that they can turn Captain Underpants back into Krupp by splashing water on him and can turn him back by snapping their fingers. Believing that Krupp will continue with his plan to separate them, they decide to settle with Captain Underpants but insist that he be dressed up as Krupp under the pretense of a secret identity, to which Captain Underpants agrees. His sudden personality change even manages to attract the attention and affection of the school's shy lunch lady Edith.

The boys even learn (after exploring his house) that Krupp might not be as evil as they thought, but has rather been lonely for most of his life. Eventually, Krupp turns back into himself after a rainstorm occurred, learning that George and Harold have started a fair at the school without his knowledge. Having enough of their antics, Krupp angrily sentences the two boys to separate classes, much to their discomfort. Despite being satisfied that he finally punished the boys as promised, Krupp finds himself moping in boredom after looking at the casserole that Edith made for him, feeling so depressed that he never got a chance to ask her out on a date.

During the fight against Professor Poopypants and the Turbo Toilet 2000, the boys change Krupp into Captain Underpants to help them fight off the villains. Unfortunately, Poopypants gets the Turbo Toilet 200 to swallow Captain Underpants whole before taking George and Harold as hostages. However the boys' sense of comedy managed to help crash the Turbo Toilet's system, allowing Captain Underpants to escape after consuming the rotten leftovers inside.

The leftovers also allowed Captain Underpants to obtain superpowers to finally defeat Poopypants, becoming a true hero to the public. However, George and Harold destroy the 3D Hypno-Ring in an attempt to permanently change him back into Krupp, as they know that they can't control Captain Underpants. Feeling sorry for Krupp because he has no friends, the boys set him and the lovesick Edith up on a date. This made Krupp have a change of heart, even returning the comics he took away from George and Harold while admitting that they are funny.

However, the toxic waste from the Turbo Toilet 2000 transforms all the toilets into an army of Talking Toilets which attack the restaurant at which Mr. Krupp and Edith are dining. Upon snapping his fingers while calling for a check after seeing a toilet eating up a citizen in horror, Mr. Krupp once again becomes Captain Underpants, carrying George and Harold away to help him fight the Talking Toilets, which confuses George, as he thought destroying the ring would destroy the hypnotism.

### Role in the Netflix series

As Mr. Krupp, he is now portrayed as incredibly stupid and mean. He has also developed a love for guacamole and salami, though he developed salami intolerance due to eating it too fast. Krupp's shown to be not very bright, even as a principal, and has always been a bully. However, there are still times where he is somewhat decent, though it's usually because it would benefit him, such as when he allowed the students and faculty of Jerome Horwitz Elementary School to go to space so he could have a chance to outshine his high school rival.

In "The Soggy Salvation of the Swirling Sweatnami," it is revealed his childhood was terrible. His mother, Bernice Krupp, verbally abused him and only saw him as a disappointment. When Mr. Krupp entered the school talent show and tried to perform as a rapper, Bernice humiliated him and encouraged his peers to do the same. This incident led Benjamin to become the spiteful principal he is today.

As a teenager, he was under the impression he competed with Moxie Swaggerman, despite her barely being aware of his existence. When Mr. Krupp meets Moxie again in The Epic Tales of Captain Underpants in Space!, he attempts to serve as the schoolship's leader but fails horribly, even sending the School Spaceship to a planet called Utopiqua and their crash landing which would got everyone almost killed.

When he get turn into Captain Underpants, like his book series counterpart, George and Harold will use him to save Piqua and the world form the villain they created by accident.

He often says "Oooooooo" whenever he finds something surprising or interesting. He aslo has powers that has him able to survive in space without a suit.

## Other alter egos

A brainwashed supervillain of Captain Underpants called *Captain NanoPants* after being taken over by the Nanobots who only appears in *The Taxing Trauma of the Treacherous Tattle Trials*.

A dream version of Captain Underpants called *Captain Ultrapants* who only appears in *The Monstrous Mayhem of the Massive Melviathan*.

## Trivia

* Alternatively, Dav Pilkey wanted Chris Farley to play Captain Underpants as the development for a live-action film or TV series began in 1997, when the first book came out. The project was shelved when Farley died.
* In many occasions, the book version of Captain Underpants is shown to be smarter than his animated counterparts.
* In the TV series, Captain Underpants often says "Oooooooo" whenever he finds something surprising or interesting.
* In The Cunning Combat of the Covert Camoflush, Captain Underpants was apparently under prohibition for using paint to attempt to paint the town red.
* Despite his cruelty, Mr. Krupp does have a soft spot for his nephew Kipper, as he punishes anyone who seemingly bullies him, despite it being obvious that Kipper is the bully.
* His full name, Benny Krupp, is a pun on the word "bankrupt."
* In *Captain Underpants and the Sensational Saga of Sir Stinks-a-Lot*, Mr. Krupp lost his ability to turn into Captain Underpants. The book stated that there are two possible reasons for this: the electromagnetic explosion that resulted from feeding Sir Stinks-a-Lot soda, Mentos, and pop rocks had erased the hypnotic spell from Mr. Krupp's brain, or Sir Stinks-a-Lot's Super-Power-Juice-ectonomy took away Mr. Krupp's superpowers.
	+ It is possible he was not erased from Mr. Krupp's mind in the book series, because in *Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers*, Old Mr. Krupp was able to turn into Captain Underpants, even after the events of the twelfth book.
* He, Mr. Krupp, George, and Harold are the only characters to appear in every episode of The Epic Tales of Captain Underpants.
* In Book 3, it is revealed that he is aware of his missions and heroism in the Treehouse Comix novels written about him by George and Harold. This is most likely because, as revealed in Book 1, Mr. Krupp has removed and stored every issue of their Captain Underpants comics. (This implies that he has read them all at some time).
	+ In the film, he reflects on his missions and accomplishments while also reading comic books about himself.
* In the film, he recalls using the plunger to fight the toilets in Book 2.
* Although he is unaware of Mr. Krupp, he is aware of his office and house
* Mr. Krupp cannot turn into Captain Underpants until his face and/or head are completely dry in the books and TV series. Mr. Krupp in the film can instantly transform back into Captain Underpants with the snap of a finger, even if he has just gotten soaked. In the film, the only exception to this rule is if it is currently raining.
* As seen in Captain Underpants: The First Epic Movie, he is obsessed with carnivals and will go to any length to make them more spectacular.
* Despite the fact that he is a deuteragonist, the entire franchise is named for him.

## Likes:

### For Principal Krupp:

* Edith (His Wife)
* Sarah Krupp (His Daughter)
* Guacamole
* Salami
* Ben Tennyson (His Favorite Kid)
* Gwen Tennyson (His Sexy High School Girl)
* George & Harold (Current His Sons In Postman Pat The Movie 2)/(Sometimes Only In Books, Movie & TV Series)
* Melvin (His Son/Formerly)
* Mayor Of Halloween Town (His Best Friend)
* President Certified (His Cousin)
* Lance Sterling (His Long Lost Brother)
* Anything Scary
* Jumpscares At George & Harold
* Watching Horror Movies
* Aliens & Predators
* Nightmares
* Dark
* Kylie Tennyson (His Favorite Sexy High School Girl)
* Teenagers
* Rock Music
* Mayor Fleegle Strode (His Demon Best Friend)
* SpongeBob SquarePants (His Friend)
* Licking Sexy High School Girls' Pussies
* Having Sex With Women
* Having Sex With Ben Tennyson
* Kissing Ben Tennyson
* Watching Anything Porn
* Jerk Off
* Nudity
* Scary Images
* Doing Pranks With Ben Tennyson
* Anything Fun (Current In Postman Pat The Movie 2)
* Singing Rock Songs
* Using TikTok
* Using Instagram
* Watching YouTube
* Dancing With Edith

### For Captain Underpants:

* Saving The Day
* Underwear
* Wedgie Power
* Heroism
* George and Harold
* Ben Tennyson (His Hero Best Friend)
* Watching Action Movies
* Playing Video Games With George, Harold & Ben Tennyson
* SpongeBob SquarePants (His Best Friend)
* Going Hero Time (His Superhero Quote)
* Fighting Skills
* Rescuing Ben Tennyson
* Taking A Bath With George & Harold

## Dislikes:

### For Principal Krupp:

* Melvin (Current)
* Getting Wet (Sometimes)
* Children (Except Ben Tennyson)
* George
* Harold
* carnivals
* anything fun (In Captain Underpants Movie)
* Ben Tennyson (Sometimes)
* SpongeBob SquarePants (Sometimes)
* Getting Sick
* Craps His Pants
* Dancing (Sometimes With Ben Tennyson)
* Crying

### For Captain Underpants:

* Ben Tennyson In Danger
* Villains
* George and Harold in danger
* Clothes
* Losing Mayor Of Halloween Town
* Being Weakness
* Killers
* Getting Wet

## His Family:

* Edith (Wife)
* Sarah Krupp (Daughter)
* George & Harold (Sons)
* Melvin ✝ (Former Son)
* President Gwen Certified (Cousin)
* Lance Sterling ✝ (Long Lost Brother)
* Diana Prince/Wonder Woman (Sister)
* Professor Poopypants ✝ (Former Brother)

Gender: Male♂

Voice By: Ed Helms

Status: Alive