The hilarious and thrilling second book in a middle-grade graphic novel series featuring two heroic but dim-witted frog superheroes, for fans of InvestiGators and Dog Man!

No one ever said it was easy being green! The contaminated swamp where Dr. Kim conducts experiments is overrun with mutants and evil machines. That's why she tinkered with amphibian genes to create the superhero Fantastic Frog and his sidekick, Tad Lad!

In this exciting follow-up, our hapless heroes take on an army of ravenous, radioactive slugs. But can they defeat the terrible Sluug, an even greater foe lurking just below the surface of the swamp?

And in their next adventure, the frogs rush off to the coast to help clean up an oil spill. But when the ducks affected by the oil merge into a gigantic, greasy Sludge Duck, will our duo be consumed in the muck . . . and lost forever?