Drew Pinestein, the Joyful Juicy Braniac from Moshi Monsters as a pumpkin. So he's more of a Grumpy Gourdy Braniac. No context as to why he's a pumpkin, so let's just assume his experiment went wrong. You can find me on Moshi Online as kmagamer725.
Moshi Monsters belongs to Mind Candy, even though I'm pretty sure they're not around no more.
