Juan Gallego's graphic novels could potentially have a number of unique features. For example, he might blend different cultural elements into his stories, creating a rich and diverse narrative. His art might also have a certain level of detail that draws the reader in, whether it's in the background scenery or the character expressions. Additionally, he could use symbolism in a unique way to convey deeper meanings within the story.
I'm not very familiar with Juan Gallego's specific works in graphic novels. But you could start by checking local comic book stores or online platforms dedicated to graphic novels. They might have some of his works available for you to explore.