Fictional aliens are imaginative beings created in literature, film, and other media. They often possess unique physical characteristics, abilities, and cultures that differ from humans. These aliens can range from friendly and helpful to hostile and dangerous, serving various roles in storytelling. Many fictional aliens are depicted in popular works, such as Star Wars and Star Trek. They can represent themes of diversity, exploration, and the unknown, allowing audiences to reflect on humanity's place in the universe. Their stories often explore complex relationships between different species and the challenges of communication and understanding.