Charise Mericle Harper has written more than fifty books for children, including the Crafty Cat, Fashion Kitty, and Just Grace series, and The Good For Nothing Button. Charise is excited and slightly nervous to share Bad Sister with the world. It’s not easy to admit you were bad, even if now you are very, very good. chariseharper.com

Rory Lucey is an illustrator and art teacher. He is the author and illustrator of Jonesy: Nine Lives on the Nostromo and a contributor to Alien: 40 Years 40 Artists, both from Titan Books. He lives in New Jersey with his wife and two cats. rorylucey.com