The lessons in this book changed the character's lives so greatly that they will never be the same again. The lesson that Jack learned that changed his life is to never back down from a challenge. It impacted his life in a good way because now that Jack knows he almost never loses monster battles. Jack learned his lesson when he was battling Thrull Tree Beast and when he fought Thrull, he never thought that he couldn't do it. The lesson that Dirk learns is that to never give up. He learned it when Thrull kidnapped Quint and stole Big Mama (their monster truck), Dirk, Jack, and June were trapped in a cage and Dirk pried the bars open. It changed his life because now whenever his friends are ready to give up, he encourages them to stay strong. Therefore, the main lessons in the book, have changed the lives of the characters so much that they'll soon be invincible. I’d rate this book a “10 out of 10” and rate the illustrations a “9 out of 10”. I would recommend this book because it is intriguing , adventurous, and Jack’s humor makes it a hilarious book for some kids who just need to let their giggles out. One unanswered question I‘d to ask the author is, ” What were Jack’s friends feelings when he fell down Thrull Tree Beast’s throat in Space Marine Armor?"