The graphic novel and the original book also differ in how they convey the world - building. In the original 'Lightning Thief' book, Rick Riordan spends a lot of time explaining the rules of Camp Half - Blood, the relationships between the demigods, and the overall mythology. In the graphic novel, some of this is shown through pictures. For example, a single panel might show the different cabins at Camp Half - Blood, giving you a quick visual understanding of the hierarchy among the demigods. This visual representation can be more immediate than the detailed descriptions in the book, but it might not be as in - depth for those who really want to soak up all the details of the world - building.
The graphic novel has a more visual representation. In the original book, you have to use your imagination to picture the characters and settings, but in the graphic novel, it's all there for you to see. For example, the appearance of the Minotaur is clearly shown in the graphic novel, while in the book you have to form the mental image from the description.