Comic book series are collections of comic book issues that tell a continuous story or explore a specific theme over multiple installments. These series can feature a variety of genres, including superheroes, fantasy, and science fiction, appealing to a wide range of audiences. Many popular comic book series have gained significant cultural impact, with characters like Spider-Man and Batman becoming household names. These series often lead to adaptations in other media, such as movies and television shows, further expanding their reach and influence in popular culture.