Book 1
Ricky Ricotta's Mighty Robot (Ricky Ricotta's Mighty Robot #1)
Dav Pilkey & Dan Santat
Book 2
Ricky Ricotta's Mighty Robot vs. The Mutant Mosquitoes from Mercury (Book 2)
Dav Pilkey
Book 5
Ricky Ricotta's Mighty Robot vs. the Jurassic Jackrabbits from Jupiter (Ricky Ricotta's Mighty Robot #5)
Dav Pilkey & Dan Santat
Book 6
Ricky Ricotta's Mighty Robot vs. The Stupid Stinkbugs From Saturn (Book 6)
Dav Pilkey
Book 7
Ricky Ricotta's Mighty Robot vs. the Uranium Unicorns from Uranus (Ricky Ricotta's Mighty Robot #7)
Dav Pilkey & Dan Santat
Book 8
Ricky Ricotta's Mighty Robot vs. the Naughty Nightcrawlers from Neptune (Ricky Ricotta's Mighty Robot #8)
Dav Pilkey & Dan Santat
Book 9
Ricky Ricotta's Mighty Robot vs. the Unpleasant Penguins from Pluto (Ricky Ricotta's Mighty Robot #9)
Dav Pilkey & Dan Santat