"Monsters Unleashed" is a comic book series published by Marvel Comics that features a variety of classic monsters from the Marvel universe. The storyline revolves around the emergence of these creatures, which are often misunderstood and portrayed as threats. The series explores themes of fear, acceptance, and the nature of monstrosity. The main characters include Spider-Man, The Avengers, and other superheroes who confront these monsters. The series showcases the battles between heroes and monsters, highlighting the complexities of their relationships. It aims to entertain while also prompting readers to consider deeper moral questions about what it means to be a monster.