Schaub, Michael (October 27, 2015). " 'Captain Underpants' banned from school book fair". Los Angeles Times . Retrieved November 14, 2015. Although the first few books came out regularly, the ninth book, Captain Underpants and the Terrifying Return of Tippy Tinkletrousers (advertised in a teaser at the end of the eighth book), was not released until 2012, after a six-year wait. During this time, Dav Pilkey was caring for his terminally ill father, who died in 2008. [17] In 2009, he signed a deal with Scholastic for four new books, the first of which was The Adventures of Ook and Gluk: Kung-Fu Cavemen from the Future, released August 10, 2010. The second was Super Diaper Baby 2: The Invasion of the Potty Snatchers, released June 28, 2011. [18] The third book, Captain Underpants and the Terrifying Return of Tippy Tinkletrousers, was released August 28, 2012. The fourth book, Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers, was released January 16, 2013.

The Adventures of Ook and Gluk: Kung-Fu Cavemen from the Future (2010) (out of print as of March 2021) Jessica Roake, in an article published in Slate, argued that the books are well suited for young readers. She wrote that "They're drawn to them because for the first time in their reading lives they are understood, entertained, and catered to all at once. It is theirs, not ours, and that feeling of exclusive ownership forges the kind of connection everyone should have with at least one book in their life. For that, most every English teacher of my acquaintance will be more than happy to take the shot to the ego the Captain provides." [34] Do you think being mean to someone can hurt them in other ways than just making them sad? When someone is mean to you what does it make you want to do? Do you think we can be destined to be good or to be evil? Deep down, are we essentially good or bad? Carl, Trixie and Frankenbooger (The Three Robo-Boogers) – Boogers who all come from the Bionic Booger Boy. They all share a weakness to oranges, which Captain Underpants successfully used to destroy the rampaging trio of living mucus. Carl had the Bionic Booger Boy's legs, Trixie had the tentacles, and Frankenbooger had the arms. Whenever they eat, they become bigger and more evil.Hibbs, Brian (August 18, 2021). "Tilting at Windmills #285: Looking at NPD BookScan: 2020". The Beat . Retrieved August 22, 2021. Fleming, Mike (October 19, 2011). "DreamWorks Animation Wins Auction For 'Captain Underpants' Feature Film Rights". Deadline . Retrieved October 20, 2011.

Petey and Li'l Petey arrive home, but Petey only walks in and gets some flowers. They walk until they get to a gravestone. Petey says he hadn't been there since he was a kid. Li'l Petey asks if his Gramma is in the gravestone. Petey says that she's in his heart, and in Li'l Petey's heart. A leaf falls into Li'l Petey's hand, and he asks if his Gramma is in there. Petey replies "Well... It's your story, kid. You can color it any way you want." a b Fleming, Mike Jr. (February 26, 2015). "Rob Letterman Doffs 'Captain Underpants'; 'Turbo's David Soren Being Fitted For DWA Pic". Deadline . Retrieved March 5, 2015. DreamWorks Animation Release Dates Include Madagascar 4". Collider.com. November 20, 2013 . Retrieved June 12, 2014.

The Second Captain Underpants Collection/The Tra-La-Larious Captain Underpants (Books 5–7 & Super Diaper Baby; 2001–2003)