These are just initial character ideas - nothing final.
Part of the fun of writing a picture book is figuring out what the characters will wear and what kind of personalities they'll have. Jack is very stylish, classy, calm, collected, while Zack is wild, sloppy and constantly stressed out. The smallest character of all, the unassuming little girl has the biggest impact on the story when she whispers one sentence. Maybe one day everyone will find out what it is (if I can make the impossible possible.).