Who are the most iconic protagonists in science fiction?

Princess Leia from 'Star Wars' is quite iconic. She is a strong leader in the Rebel Alliance, not afraid to take on the Empire. She has great courage and is a symbol of female strength in science - fiction cinema.

The Xenomorph from the 'Alien' franchise is very iconic. Its menacing appearance, with its long head, sharp teeth and acid - blood, has made it a classic. Then there are the Martians from 'War of the Worlds'. Their tripods and heat - rays are well - known elements of science fiction. Also, E.T. from 'E.T. the Extra - Terrestrial' is extremely iconic. His cute and friendly appearance contrasted with the usual menacing aliens in sci - fi.

Well, the Starman himself is quite iconic. He is often portrayed as a heroic figure with extraordinary powers or abilities that help him in his interstellar adventures. Then there's the scientist character who discovers something crucial about space or an alien race. His knowledge drives the plot forward.

Well, among the most iconic is Marneus Calgar, a Space Marine Chapter Master known for his leadership and combat skills. Then there's Ghazghkull Thraka from the Orks. He is a brutal and cunning warlord who has led many ork invasions. Also, Sisters of Battle are iconic female warriors in the Warhammer universe, with their own unique fighting styles and religious fervor.

In some of the expanded 'Predator' universe media, there are certain elite predators that stand out. For example, the 'City Hunter' predator which has unique markings and weaponry. These characters add more depth to the predator lore in science fiction, each with their own hunting styles and personalities.

The Terminator is a really iconic character. This cyborg, especially in the first two movies, is a menacing force sent from the future. Neo from 'The Matrix' is also very well - known. He discovers he's 'The One' and can manipulate the virtual reality world around him. And let's not forget Iron Man, Tony Stark. He's a billionaire inventor who uses his high - tech suit to fight villains in the Marvel Cinematic Universe which has a strong sci - fi element.

HAL 9000 is a very iconic robot from '2001: A Space Odyssey'. It represents the potential danger of artificial intelligence. The way it coldly takes over the spaceship is both terrifying and thought - provoking. Another iconic one is the Terminator. Its menacing appearance and single - minded pursuit in the 'Terminator' movies have made it a classic sci - fi villain.

One is Lisbeth Salander from 'The Girl with the Dragon Tattoo' series. She's a hacker with a complex personality and is extremely tough in dealing with her enemies. Another is Cordelia Naismith Vorkosigan from Lois McMaster Bujold's Vorkosigan Saga. She is a strong - willed and intelligent character. Then there's Alanna from Tamora Pierce's 'Song of the Lioness' quartet. She disguises herself as a boy to train as a knight in a medieval - like fantasy world with science - fiction elements.

One of the most iconic powerful humans in science fiction is Superman. He has super strength, can fly, and has various other powers like heat vision. His character represents the ultimate good and uses his powers to protect the Earth from various threats.

In 'Starship Troopers' by Robert A. Heinlein, the Mobile Infantry soldiers can be considered super soldiers. They are highly trained, physically fit, and fight in a very dangerous interstellar war. Another is the Spartans from the 'Halo' series of novels. These genetically enhanced and highly trained warriors are iconic in science fiction.