When I was about 17 I wrote & illustrated a short graphic novel aimed at children called 'The Six & a half adventures of Crazy Frog' as part of my A Levels.
It's main character was, you guessed it, a frog named Crazy, who was essentially a good soul, and a daydreamer. The book was generally about the antics him & his friends got up to. Secondary characters included his nephew, a pyromaniac newt named Kneecap (think Scrappy Doo, but darker, and likeable), and Meanie, Crazy Frog's imaginary friend, who isn't actually imaginary at all. The main villain was the Notorious P.I.G, a Guinea Pig, formerly a house-pet, cast out for killing his siblings. His main objective is to destroy Crazy Frog & his friends, and take over his patch of the garden pond, a 'turf war' if you will. His trusty henchmen are The Twelve Monkfish (who all had their own names & specialities) and Fishy, the water rat.
It's kinda Wind in the Willows meets Resevoir Dogs, I took alot of inspiration from Roald Dahl, he never sold kids short, his books were always very, very dark.
Helped me get an 'A' anyway!! And my little sisters loved it. I'm sure it's still knocking round my old school somewhere, I'll have to track it down.
* as a side note, a few years after this, there was a famous ringtone, various hit singles & other sh**ty merchandise all surrounding a character called 'The Crazy Frog' which made me wonder if I should've tried to get it published & copyrighted the name, might have earned me a few pennies!