2. In addition, Voldemort is a descendant of Slytherin. The symbol of Slytherin is a snake. Voldemort also speaks snake, and he especially likes snakes. His pet is a big snake. With his constant extinction of humanity, he gradually evolved into a snake's skin.
3. As the villain in the story, in order to reflect the distortion of his humanity and soul, great changes have taken place in his appearance.
According to horace slughorn, "separating the soul is a violation, which violates nature", and the horcrux is also very costly to the producer himself, which will destroy his humanity and make him unrecognizable.
Even Voldemort himself admits to knowing that "I am torn from my body, and I am not as good as a ghost, not as good as the worst ghost". Only two people have successfully made horcruxes in history. One is the founder of taming basilisk and horcruxes, Herpo the Foul, and the other is Voldemort, and Voldemort is the only wizard who successfully made multiple horcruxes.
Extended data
Lord Voldemort, formerly known as Tom Marvolo Riddle or Tom Riddle Jr, is the villain in the magical novel Harry Potter by the British writer J·K· Rowling.
The leader of the terrorist organization "Death Eaters", the extreme wizard's pure blood theory, extremely rejected Muggle-born wizards (mudblood) and wizards' descendants who could not cast magic (dumb guns), and initiated two wizard wars.
There are seven horcruxes, among which six horcruxes, the ring of Marvolo Gunter, his diary, salazar slytherin's locket, helga hufflepuff's golden cup, rowena ravenclaw's crown and pet snake's Nagini, were made by himself.
When trying to kill Harry Potter, the killing spell was bounced by the sacrificial spell of Harry's mother lily potter, and his body was destroyed, and some souls entered Harry's body (making Harry the seventh horcrux).
In Harry Potter and the Goblet of Fire, the body is restored with the help of peter pettigrew. 1May 2, 998 was killed by Harry Potter in the second wizard war.
Voldemort is known as "the most dangerous dark wizard in history", and most people dare not call him by his first name. Moreover, in the later period (Harry Potter and the Deathly Hallows), the name was even protected by death eaters. Once someone said it, it would break the magic barrier and cause disturbance, making it easy for death eaters to track it down.
People usually call him "You-Know-Who", "He-Who-Must-Not-Be-Named" or "The Dark Lord" (commonly used by death eaters as a courtesy title for Voldemort).
Reference: Baidu Encyclopedia-Voldemort