| # | Book Title | Author | |
|---|---|---|---|
| 1 | Ricky Ricotta's Mighty Robot | Pilkey, Dav | |
| 2 | Ricky Ricotta's Giant Robot vs. The Mutant Mosquitoes From Mercury | Pilkey, Dav | |
| 3 | Ricky Ricotta's Giant Robot vs. The Voodoo Vultures From Venus | Pilkey, Dav | |
| 4 | Ricky Ricotta's Mighty Robot vs. The Mecha-Monkeys From Mars | Pilkey, Dav | |
| 5 | Ricky Ricotta's Mighty Robot vs. The Jurassic Jackrabbits From Jupiter | Pilkey, Dav | |
| 6 | Ricky Ricotta's Mighty Robot vs. The Stupid Stinkbugs from Saturn | Pilkey, Dav | |
| 7 | Ricky Ricotta's Mighty Robot vs. The Uranium Unicorns from Uranus | Pilkey, Dav | |
| 8 | Ricky Ricotta's Mighty Robot vs. The Naughty Nightcrawlers from Neptune | Pilkey, Dav | |
| 9 | Ricky Ricotta's Mighty Robot vs. The Unpleasant Penguins from Pluto | Pilkey, Dav |