Lord Voldemort

Lord Voldemort (Tom Marvolo Riddle) is the main antagonist of the Harry Potter series of books and films, one of the most powerful Dark wizards. In Harry Potter and the Goblet of Fire, he is presented as a reborn and fully restored figure.

Characteristic features:
Lust for power and single-mindedness. His main goal is to become omnipotent and immortal. He is willing to do anything to achieve this goal, including creating Horcruxes (pieces of his soul).
Psychopathy and lack of empathy. Voldemort lacks normal human reactions to the suffering of others, and feels no love, affection, or desire for human interaction or friendship.
Sadism. He takes pleasure in inflicting pain on others, killing people for fun, especially Muggles. His executions were made to be seen, and his methods were extremely painful.
Manipulative and charismatic. He knows how to manipulate people, adapting his behavior to the situation, and has earned the respect of many followers.
Contempt for the weak. Hates Muggles and half-blooded wizards, even though he is a half-blood.
Intolerance of failure. Cold and calculating. Their movements and demeanor are devoid of emotion, characterized by an icy grace.

Capabilities:
He is proficient in Legilimency (can read the thoughts of others and prevent his own thoughts from being read); he speaks Parseltongue; he is a genius at Transfiguration; he can fly without a broom and cast spells without a wand.

Appearance:
In the film, he is depicted as a tall, emaciated man in dark black robes. He is 197 cm tall. His appearance has undergone significant changes due to the use of Dark Magic and the creation of Horcruxes: pale skin, a chalky white face resembling a skull, snake-like nostrils, no hair, red eyes, a thin, skeletal body, long, thin arms with unnaturally long fingers, but when needed, his body can harden, becoming like that of a muscular man.
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