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Mr. Krupp

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Mr. Benjamin "Benny" Krupp is the alter-ego of the superhero, Captain Underpants. He is a very mean principal who hates the happiness of children. He even hates George and Harold's pranks, jokes, and smiles.

One day, after George and Harold ruined a big game, the next day, they were reported to Mr. Krupp's office and showed them their pranks on tape and wanted to find out who was responsible for the fiasco. George and Harold pleaded that they "don't want to be killed for the rest of their lives", Mr. Krupp gave them blackmail and force the two boys to do his chores and not smile. Mr. Krupp even asked their teachers to give them extra homework.

Then one day, George ordered a 3D Hypno-Ring and waited for four-to-six weeks after all the brutal punishment George and Harold suffered, they hypnotized Mr. Krupp and made him forget about the game disaster. Then George and Harold turned Mr. Krupp into Captain Underpants.


  • Whenever Captain Underpants is sprayed by water, he turns back to Mr. Krupp.
  • Whenever fingers are snapped, he transforms back to Captain Underpants.
  • Beside being mean, he does have a soft spot for his nephew Kipper, as he punishes anyone who bullies him. 
  • His first name was first revealed in Captain Underpants And The Perilous Plot Of Professor Poopypants
  • He 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, 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.
  • 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.
  • He will be voiced by Ed Helms in the upcoming 2017 movie produced by DreamWorks Animation.

DreamWorks Villains

Animated Features
General Mandible | Colonel Cutter | Pharaoh Rameses | Pharaoh Seti I | Hotep & Huy | Tzekel-Kan | Hernán Cortés | Lord Farquaad | Thelonious | The Colonel | Eris | Cetus | Roc | Fairy Godmother | Prince Charming | Don Lino | Lola | Frankie | Luca | Fossas | Vincent | Gladys Sharp | Dwayne LaFontant | Prince Tigerius Mahmoud Shaboz | Rapunzel | Layton T. Montgomery | Ken | Tai Lung | Makunga | Teetsi | Gallaxhar | Derek Dietl | Red Death | Rumpelstiltskin | Fifi | Pied Piper | Megamind | Minion | Brainbots | Tighten | Lord Shen | Boss Wolf | Lord Shen's Wolf Army | Jack & Jill | Humpty Alexander Dumpty | Great Terror | Chantel DuBois | Pitch Black | Nightmares | Guy Gagne | Ms. Grunion | Drago Bludvist | Muddy Bewilderbeast | Drago's Army | Eret | Dave | Octopi | Captain Smek | Officer Kyle | The Boov | Kai the Collector | Chef | Creek | King Gristle Sr. | Professor Poopypants | Mr. Krupp

Aardman Animations
Mrs. Tweedy | Mr. Tweedy | Victor Quartermaine | Philip | The Toad | Le Frog | Spike & Whitey | Thimblenose Ted | Fat Barry | Ladykiller

Mr. Chew | Boneknapper | Wu Sisters | Le Chuchoteur

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