Napoleon Bonafrog is a lackadaisical mutant frog. He is voiced by Jon Heder of Napoleon Dynamite fame.
Napoleon and Mikey find that they have a lot of similarities, which is why they understand each other so well. Napoleon describes himself as a "free spirit" and explains that, like Mikey, the other frogs look down at him and get frustrated for his goofyness.
- Napoleon is voiced by Jon Heder, who is best known for portraying the character of Napoleon Dynamite. Heder portrays the character using the same voice and speech patterns as those his character used in the film Napoleon Dynamite, which were originally a parody of the youth culture of Cache Valley on the border of Utah and Idaho.
- Napoleon's shirt has the exact same unicorn design from Mikey's +1 Ring of Awesome in "Mazes & Mutants".