George and Harold hypnotize their principal who, believing he is the superhero Captain Underpants, leads them to the lair of the nefarious Dr. Diaper. They must then defeat his evil robot henchmen.

A snotty situation ensues when Melvin Sneedley, an academically gifted student, turns into the Bionic Booger Boy and must be stopped by George, Harold, and Captain Underpants.

When George and Harold use their traveling purple potty to travel to another dimension where the school is nice and the principal, Mr. Krupp, thinks they're funny, they meet up with their evil twins and must face their cleverest enemies ever -- themselves.

Only Captain Underpants can stop the three evil space aliens who have invaded Jerome Horwitz Elementary School and turned everyone into lunchroom zombie nerds.

Jorge y Berto han creado un monstruo, la Supermujer Macroelástica. Con la ayuda de sus horripilantes robots y su horrendo moño, la Supermujer está dispuesta a apoderarse del mundo y administrarle un golpe a todo el que se interponga en su camino-- incluido el Capitán Calzoncillos. George and Harold have really done it this time-- they've created a monster! She's faster, smarter, and more evil than anything the world has seen before--she's Wedgie...

Por burlarse del nombre del profesor Pipicaca, Jorge y Beto están a punto de hacer que su nuevo maestro de ciencia enloquecido de rabia se apodere del planeta entero. Pero Capitán Calzoncillos viene al rescate. When Professor Pippy P. Poopypants comes to Jerome Horwitz Elementary School to teach science, and he goes off the deep end because students make fun of his name, only Captain Underpants can save the school from the professor's perilous...

When Professor Pippy P. Poopypants comes to Jerome Horwitz Elementary School to teach science, and he goes off the deep end because students make fun of his name, only Captain Underpants can save the school from the professor's perilous plot.

¡Creían que todos estaban a salvo, pero nada de eso! Nuestros héroes vencieron al Niño Mocobiónico, pero se olvidaron de los Ridículos Mocorobots. Acompaña a Jorge, Berto el Sr. Carrasquilla, Gustavo Lumbreras y Chuli el hámster biónico en una aventura que los llevará a lo más recóndito del espacio sideral, ¡al mundo inexplorado del día antes de ayer! George, Harold, Captain Underpants, and Sulu the Bionic Hamster battle the three Ridiculous...

Dog Man is still learning a few tricks of the trade. Petey the cat is out of the bag, and his criminal curiosity is taking the city by storm. Something fishy is going on! Can Dog Man unleash justice on this ruffian in time to save the city, or will Petey get away with the purr-fect crime? Hombre Perro, el nuevo héroe de Dav Pilkey, el creador del Capitán Calzoncillos, está aún aprendiendo su oficio mientras que Pedrito el gato está acabando...

A Hombre Perro se le acaba la suerte, Pedrito confronta su pasado no tan perfecto y el abuelo anda haciendo de las suyas. El mundo está fuera de control con los nuevos villanos que han llegado a la ciudad. La situación se ve oscura y sin esperanzas. Sin embargo, no todo está perdido. ¿Podrá arreglar las cosas el increíble poder del amor? "Dog Man is down on his luck, Petey confronts his not so purr-fect past, and Grampa is up to no good. The...