Read with Rocket and Groot! Marvel’s mightiest heroes promote positive messages for young readers—Reading is Out of This World! Readers are Leaders! Read and Grow!—on a suite of new materials inspired by the Rocket and Groot picture book series. Written by Brendan Deneen and illustrated by Cale Atkinson, the series includes Night Night, Groot, First Day of Groot!, Snow Day for Groot! and Summer Adventure for Groot! Rocket and Groot Poster