Frankenstein's monster is a fictional character created by author Mary Shelley in her 1818 novel, "Frankenstein; or, The Modern Prometheus." The creature is assembled from various body parts and brought to life by the scientist Victor Frankenstein. It is often depicted as a large, grotesque being with green skin and a flat head, though interpretations vary. The monster struggles with its identity and seeks acceptance from society, facing rejection due to its appearance. This leads to feelings of loneliness and anger, ultimately driving the creature to confront its creator, Victor Frankenstein, in a tragic tale of ambition and responsibility.