George and Harold's nemesis Melvin Sneedly goes from snooty to snotty in the sixth book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man! George and Harold are up to their old tricks again, and when their latest prank makes a direct hit on school brainiac Melvin, he decides to get even! But in the blink of an eye -- and the sneeze of a nose -- the Bionic Booger Boy is born! Can Captain Underpants clean up this catastrophe, or will the mucous monster make a mess of things?

Just when they thought they were out, it pulls them back in! Our heroes beat the Bionic Booger Boy, but they forgot about those rascally Robo-Boogers. Join George, Harold, Mr. Krupp, Melvin Sneedly, and Sulu the Bionic Hamster on an adventure that will take them into the deepest regions of outer space and back through time to the mysterious and uncharted world of the day before yesterday! It's a monster-mashin', robo-wranglin', time-travelin', brain-switchin', nose-pickin' good time!

Celebrate the 25th and a half anniversary of THE ADVENTURES OF CAPTAIN UNDERPANTS with a special edition featuring a BRAND NEW 32-page DOG MAN comic! George and Harold are best friends who enjoy making their own comic books. Together they've created the greatest superhero in the history of their elementary school: Captain Underpants! His true identity is SO secret, even HE doesn't know who he is! Tra-la-laaaaa! It's can't-miss fun! After the Captain Underpants adventure, join George and Harold as they share their never-before-seen bonus comics: Captain Underpants Meets Dog Man and Dog Man and the League of Misfits. The Adventures of Captain Underpants is the first book in the worldwide bestselling Captain Underpants series by Dav Pilkey. For even more adventures, creativity, and humor, be sure to check out Dav's Dog Man and Cat Kid Comic Club graphic novels. Reading gives you superpowers!

George and Harold create a comic book superhero, Captain Underpants, and hypnotize their school principal into assuming his identity. This series tonge-in-cheek writing style and cartoonish drawings make it consistently laugh-out-loud funny.

George and Harold are back in another icky adventure! When class boffin Melvin Sneedly goes too far with his latest amazing invention, the Bionic Booger Boy comes to sticky, snotty, bad-tempered life...

George and Harold have created the greatest superhero in the history of their school — and now they're about to bring him to life! MEET CAPTAIN UNDERPANTS! HIS TRUE IDENTITY IS SO SECRET, EVEN HE DOESN'T KNOW WHO HE IS! FIGHTING FOR TRUTH, JUSTICE AND ALL THINGS PRE-SHRUNK AND COTTONY!

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. By flipping the pages, the reader may view animated illustrations.