Sci-fi characters are often set in futuristic or otherworldly environments, showcasing advanced technology and alien species. They can include humans, robots, aliens, and hybrids, each with unique abilities and traits. These characters often face challenges that explore themes of morality, identity, and the impact of technology on society. Common examples of sci-fi characters include space explorers, androids, and extraterrestrial beings. They may possess special powers, such as telepathy or super strength, and often embark on quests that test their limits. Through their journeys, they reflect human experiences and emotions, making them relatable despite their fantastical settings.