by Dav Pilkey (Author), Dan Santat (Illustrator)

An out-of-this-world friendship adventure by Captain Underpants creator Dav Pilkey, with full-color art and mini comics by Caldecott Medalist Dan Santat.

Ricky Ricotta and his Mighty Robot are in for a sticky, slimy surprise Ricky and his Mighty Robot have built the coolest fort Squeakyville has ever seen, and they can't wait for the fun to begin But then Cousin Lucy arrives with her pets and plans to turn it into a princess castle -- what a party pooper Things completely fall apart when Nimrod Nightcrawler, a wicked worm from the planet Neptune, digs a tunnel under Ricky's fort, trapping the Mighty Robot. Now it's up to Ricky and Lucy to put a stop to this nightmare -- and save their friend

Front Jacket

Ricky Ricotta and his Mighty Robot are in for a sticky, slimy surprise!

Ricky and his Mighty Robot have built the coolest fort ever, and they can't wait for the fun to begin! But then Cousin Lucy arrives and plans to turn it into a princess castle -- what a party pooper! Things completely fall apart when Nimrod Nightcrawler, a wicked worm from Neptune, digs a tunnel under Ricky's fort, trapping the Mighty Robot. Now it's up to Ricky and Lucy to put a stop to this nightmare -- and save their friend!

Featuring Flip-O-Rama!
Flip the pages to animate the action!

Plus: All-new mini comics inside!

Praise for Ricky Ricotta's Mighty Robot

A fun introduction to chapter books. -- School Library Journal

Has all the classic Pilkey hallmarks: comic book panels, superhero action, and Flip-O-Rama. -- Booklist

Back Jacket

Ricky Ricotta and his Mighty Robot are in for a sticky, slimy surprise!

Ricky and his Mighty Robot have built the coolest fort ever, and they can't wait for the fun to begin! But then Cousin Lucy arrives and plans to turn it into a princess castle -- what a party pooper! Things completely fall apart when Nimrod Nightcrawler, a wicked worm from Neptune, digs a tunnel under Ricky's fort, trapping the Mighty Robot. Now it's up to Ricky and Lucy to put a stop to this nightmare -- and save their friend!

Featuring Flip-O-Rama!
Flip the pages to animate the action!

Plus: All-new mini comics inside!

Praise for Ricky Ricotta's Mighty Robot

"A fun introduction to chapter books." -- School Library Journal

"Has all the classic Pilkey hallmarks: comic book panels, superhero action, and Flip-O-Rama." -- Booklist

Author Biography

Dan Santat wrote and illustrated the graphic novel Sidekicks, and has also illustrated many acclaimed picture books, including The Guild of Geniuses and The Adventures of Beekle: The Unimaginary Friend, which won the Caldecott Medal. He lives in Alhambra, California, with his family. Visit his website at dantat.com.

When Dav Pilkey was a kid, he was diagnosed with ADHD and dyslexia. Dav was so disruptive in class that his teachers made him sit out in the hallway every day. Luckily, Dav loved to draw and make up stories. He spent his time in the hallway creating his own original comic books -- the very first adventures of Dog Man and Captain Underpants.

In college, Dav met a teacher who encouraged him to write and illustrate for kids. He took her advice and created his first book, World War Won, which won a national competition in 1986. Dav made many other books before being awarded the California Young Reader Medal for Dog Breath (1994) and the Caldecott Honor for The Paperboy (1996).

In 2002, Dav published his first full-length graphic novel for kids, called The Adventures of Super Diaper Baby. It was both a USA Today and New York Times bestseller. He has published more than seventy books for children, including the bestselling Dog Man and Cat Kid Comic Club graphic novels.

Dav's stories are semi-autobiographical and explore universal themes that celebrate friendship, empathy, and the triumph of the good-hearted.

When he is not making books for kids, Dav loves to kayak with his wife in the Pacific Northwest.