Moriarty

age: 27 years
Height: Moriarty is extremely tall and thin.
Appearance: clean-shaven, pale, looks ascetic.
Hair: Dark, sleekly styled back
Forehead: Large, convex and white.
Eyes: deep-set, brown.
Shoulders: stooped, rounded from long periods of exercise.
Head: juts forward and slowly sways from side to side in a "surprisingly reptilian manner."

Talking too much. You need to learn to formulate your thoughts concretely and clearly, and not dump a ton of information on people.
Turning the conversation back to yourself. Moriarty believes this makes a person selfish.
Giving unsolicited advice. The character believes that people often don't need it.

Some of the criminal tactics Professor Moriarty uses include:
Using ciphertexts. Moriarty managed to get to Sherlock Holmes through small clues that led to him, and used a ciphertext that only Holmes could decipher.
Justification of Crime. Moriarty attempts to "intellectually" justify corruption and theft, providing a philosophical basis for them. He describes crime as a complex "system" that he understands better than anyone.
Image manipulation. Moriarty creates the image of a "humane" drug business, recognizing that his audience cares not only about money but also about moral justification.
Use of security measures. Moriarty lists incredible security measures, such as a "concrete cube on chains" and a "Faraday cage," creating the image of an invulnerable techno-god.

Moriarty used his ability to change his voice tone to conduct psychological warfare.

He could change his tone several times in a single sentence: from serenity, humor, mockery, childishness, relaxation, to violence. This made Moriarty difficult to read and anticipate.

Some unique character traits of Professor Moriarty:
High intelligence. Moriarty is considered one of the smartest people on the planet.

Master Tactician. The character is calculating and resourceful; for example, he managed to obtain a nearly undetectable poison.

A master of manipulation, Moriarty was a master of terrorist tactics and intimidation strategies, knowing exactly which buttons to press to exert pressure or anger people.

The ability to change his tone of voice and behavior. Moriarty could wage psychological warfare, varying his tone from serenity, humor, mockery, childishness, and ease to violence.

Experienced Deceiver. The character is skilled in deception and misrepresentation through several means, such as using the character Richard Brooke.

An expert in managing criminal networks, Moriarty could flawlessly consult with and command them all, including a centuries-old Chinese crime syndicate.

A Tendency to Cruelty. The character has a hereditary tendency toward cruelty, and his extraordinary intelligence not only fails to restrain this tendency, but actually enhances it, making it even more dangerous.

Some behavioral characteristics of Professor Moriarty:
Cautious nature. Moriarty's cautious nature makes his criminal activities virtually untraceable to anyone without access to his encrypted notebook.

Genius-level intellect. Moriarty possesses a high level of intelligence, equal to or superior to Sherlock Holmes. This has led to his nickname, the Napoleon of Crime.
Erudition. Moriarty possessed knowledge and expertise in many areas of academic research. For example, he was an expert in the binomial theorem and the use of mathematics in astronomical problems.
Mastering criminal tactics and intimidation techniques, Moriarty was a criminal mastermind who could remain undetected while crafting flawless plans for his criminal activities.
Martial Arts Mastery. Although Moriarty relies primarily on his men, he is a master of baritsu and is a strong, agile, and dangerous opponent.

A tendency toward negatively construed actions. Moriarty is prone to illegal actions, yet when discussing his illegal behavior, he never directly acknowledges its obvious nature.

A Tendency to Cruelty. Sherlock Holmes laments Moriarty's natural inclination toward cruelty and criminality, which, combined with his extraordinary intelligence, made him dangerous.

Temperament and aggression. Moriarty can be hot-tempered and aggressive at times, but mostly he is cool, emotionless, and reserved.

Courtesy and politeness. Moriarty is courteous and polite to everyone, even his enemies.

Obsession with Holmes. In the Sherlock series, Moriarty is obsessed with putting Holmes in his place, and to do so, he unhesitatingly resorts to torture, murder, and insane stunts.

Clients

Jim Moriarty is a criminal consultant who plans and organizes crimes. People contact him and pay him in exchange for planning the "perfect" crimes for their personal gain. His expertise ranges from faking his own death to art forgery. He is discreet, never communicating directly with his clients to avoid identification, often simply leaving them with his name as the only information they know about him.

Sponsored by Jeff Hope to start killing.
Helped Black Lotus agents infiltrate London.
The fake death of Ian Monkford.
Supplied poison to Raul de Santos to aid in the murder of Connie Prince.
Helped Miss Vaclavska in forging the authenticity of a Vermeer painting.
Advised Irene Adler on how to manipulate Sherlock and Mycroft Holmes.
Information leaked to a terrorist cell about a US-UK counter-terrorism operation.

Sherlock Holmes seems to be the only person who can entertain Moriarty. Moriarty shares several of his erratic musings with Sherlock: he contemplates suicide because he's bored with the world, and he obsesses over a consulting detective until he believes Sherlock is just "another ordinary man." When Sherlock spots a hole in Moriarty's plan, Moriarty seemingly kills himself to get the last laugh. In his interactions (and in his interactions with every character to date), Moriarty insists on playing his games on his own terms.

Moriarty nicknamed Sherlock "the virgin" and constantly interferes in his life just to watch him dance. On the few occasions they meet, Moriarty usually speaks casually to Sherlock, threatening his friends. He displays a sick and perverted behavior in Sherlock's company and will do anything to win the game once he starts playing.

Possibilities

Moriarty is incredibly intelligent. He is one of the most intelligent people on the planet, rivaled only by Sherlock, Mycroft, Charles Augustus Magnussen, and Eurus Holmes. His genius was powerful enough that Moriarty could safely interact with Eurus. He was extremely skilled at manipulation, and even Sherlock had difficulty predicting Moriarty's next move.

He had an uncanny ability to change his tone of voice and demeanor several times in a single sentence for psychological warfare—from serenity, humor, mockery, childishness, and ease to violence. This made Moriarty extremely difficult to read and anticipate.

He was also quite calculating and resourceful for his age, managing to develop a nearly undetectable poison that would work effectively under the circumstances Moriarty demanded. As an adult, he mastered terrorist tactics and intimidation strategies to perfection, knowing precisely which levers to pull to pressure or irritate people.

Some of Moriarty's character traits that make him dangerous:
Morality is nonexistent. Moriarty has no regard for the lives of others and is completely unpredictable, even for the smartest characters in the series.

A Tendency to Cruelty. Conan Doyle's works suggest that Moriarty has a hereditary tendency toward cruelty, and his extraordinary intelligence not only fails to curb it, but actually enhances it, making it even more dangerous.

Arrogance and self-confidence. Moriarty often spoke in a tone that intimidated or irritated his opponents.

Ability to manipulate. Moriarty was very skilled at manipulation, and even Sherlock had difficulty predicting his next move.
Ruthlessness. Moriarty was merciless and committed torture and murder in a sadistic manner.

James "Jim" Moriarty is the main antagonist of the British criminal underworld.

The world's only consulting villain, the sworn enemy of Sherlock Holmes, the equally unrivaled consulting detective.

Jim controls criminals like puppets. Every villain Sherlock encountered in the first season was somehow connected to the mysterious Moriarty.

Moriarty is Sherlock Holmes's archenemy and evil double. He is a dangerously eccentric, yet cunningly ruthless and elusive crime boss.

Some character characteristics:
has a sarcastic, cynical sense of humor;
speaks very quietly, but usually changes the pitch of his voice during sentences for greater effect;
master of blackmail and unpredictability;
knows about people's weaknesses and uses them to his advantage.

Moriarty is a brilliant criminal mastermind, known for his brilliant mind and ruthless logic. He possesses a cold and calculating nature, tolerates no mistakes, and considers himself intellectually superior to everyone else.

Moriarty controls a vast criminal network spanning the globe and is known as the "Napoleon of Crime."

Some facts about Professor Moriarty:
Moriarty was born into a respectable family and received an excellent education. Sherlock Holmes lamented his natural inclination toward cruelty and criminality, which, combined with his extraordinary intelligence, made the criminal genius exceptionally dangerous.

Professor isn't a nickname: Moriarty actually received this title at a university, where he headed the mathematics department. "Dark rumors" forced him to leave his previous position.