<P> Fiennes's nephew, Hero Fiennes - Tiffin, portrayed Tom Riddle as a child in Harry Potter and the Half - Blood Prince . By the time filming arrived Christian Coulson was 29, and not considered suitable to return as the adolescent Riddle . Thomas James Longley was originally scheduled to take over the role, but last minute renegotiations saw Frank Dillane cast instead . </P> <P> After he regains his body in the fourth book, Rowling describes Voldemort as having pale skin, a chalk - white, skull - like face, snake - like slits for nostrils, red eyes and cat - like slits for pupils, a skeletally thin body and long, thin hands with unnaturally long fingers . As mentioned in the first chapter of the seventh book, he also has no hair or lips . Earlier in life, as seen through flashbacks contained in the second and sixth books, Tom Marvolo Riddle was handsome and tall with pale skin, jet black hair, and dark brown eyes . He could charm many people with his looks . The transformation into his monstrous state is believed to have been the result of creating his Horcruxes and becoming less human as he continued to divide his soul . In the films, Voldemort's eyes are blue with round pupils . </P> <P> Rowling described Voldemort as "the most evil wizard for hundreds and hundreds of years". She elaborated that he is a "raging psychopath, devoid of the normal human responses to other people's suffering", and whose only ambition in life is to become all - powerful and immortal . He is also a sadist who hurts and murders people--especially Muggles--just for pleasure . He has no conscience, feels no remorse, and does not recognise the worth and humanity of anybody except himself . He feels no need for human companionship or friendship, and cannot comprehend love or affection for another . He believes he is superior to everyone around him, to the point that he frequently refers to himself in the third - person as "Lord Voldemort". Rowling also stated that Voldemort is "incredibly power hungry . Racist, really", and that if Voldemort were to look into the Mirror of Erised, he would see "Himself, all - powerful and eternal . That's what he wants ." </P> <P> Rowling also stated that Voldemort's conception by influence of Amortentia--a love potion administered by his mother, a witch named Merope Gaunt, to the Muggle Tom Riddle--is related to his inability to understand love; it is "a symbolic way of showing that he came from a loveless union--but of course, everything would have changed if Merope had survived and raised him herself and loved him . The enchantment under which Tom Riddle fathered Voldemort is important because it shows coercion, and there can't be many more prejudicial ways to enter the world than as the result of such a union". </P>

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