Who are the most iconic famous robots in science fiction?

Sure. R2 - D2 is definitely one of the most iconic. Its beeping and whirring sounds are instantly recognizable, and it has been a beloved character in the 'Star Wars' saga for decades. HAL 9000 is also iconic. The cold, calculating voice and its actions in '2001: A Space Odyssey' have made it a classic in science fiction. And of course, the Terminator. With its menacing appearance and relentless pursuit in the movies, it has become a symbol of the dangerous potential of artificial intelligence in science fiction.

Well, there's C - 3PO from 'Star Wars'. He is a protocol droid, fluent in many languages and often provides comic relief while also being an important part of the story. He is very recognizable with his golden plating.

Leon from 'Resident Evil' is an assassin - like character. He is a government agent with excellent combat and survival skills. He has to face various bio - horror threats and often uses his skills to take down enemies in a very assassin - like manner.

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.

The most well - known protagonists in science fiction include Paul Atreides from 'Dune'. He's a young nobleman who must navigate the complex politics and dangerous environment of the desert planet Arrakis. John Carter from the 'John Carter of Mars' stories is also notable. A Confederate veteran who is mysteriously transported to Mars and becomes a hero there. And don't forget Ender Wiggin from 'Ender's Game'. A child prodigy trained to lead the fight against an alien threat.

The most iconic is probably Wonder Woman. Her star - spangled costume and lasso of truth are instantly recognizable. She represents female power and has been a symbol for decades. Another iconic one is Xena. Her leather outfit and chakram weapon are her trademarks. She was a pioneer for strong female characters on TV. And of course, Buffy. Her stake - wielding and slaying of vampires made her an icon in the 90s.

Maxwell Smart from 'Get Smart' is an iconic and comical spy character. He may not be as serious as some others but his bumbling yet ultimately successful adventures are really memorable. Illya Kuryakin from 'The Man from U.N.C.L.E.' is also iconic. He's a cool and capable spy who teams up with his partner to take on various threats. And of course, there's the unnamed protagonist in 'The Spy Who Came in from the Cold' who has to deal with the harsh realities of the Cold War spy world.

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.