We've been loving the Hamster Princess series by Ursula Vernon and so picked up this series as well:
Dragonbreath #1 by Ursula Vernon:
Danny Dragonbreath can't breathe fire, but he has no fear. And that comes in handy when a bad grade at school inspires him to enlist his cousin the sea-serpent's help with a research project. Using a hybrid of comic-book panels and text, Ursula Vernon introduces an irresistible set of characters that will have readers laughing until smoke comes out of their noses!
Dragonbreath is listed as middle grade just like Hamster Princess, and I'd say that it's more violent but also more goofy, because Danny Dragonbreath is so reckless. Some of the other children - er, animals - make fun of Danny and his friends.
The newest installment, Knight-napped, comes out this week, Jan 6th!
Ursula is the creator of Hugo-Award winning graphic novel Digger, which is for more mature audiences, as well as many other graphic novels and otherworks which you can find out about at