Tom Riddle/Penny Parkinson

Manipulative and cunning. Even in the orphanage, Tom showed a tendency toward violence and manipulation, intimidating other children and using his magical abilities for evil. He was adept at adapting his behavior to the situation and acted discreetly, leaving no trace.
Pride and contempt for the weak. He was convinced of his own superiority, despising Muggles and Muggle-born wizards, considering himself "above nature."
A lack of empathy and the capacity for love. This was largely due to the fact that he was conceived under the influence of a love potion, without true love, and also because he deliberately "torn out" all "weakness" from himself.
Purposeful and coldly calculated, Tom understood early on that emotions interfere with control, and he always planned his actions several steps ahead.
Using magic for selfish ends. Even before realizing his abilities, he used them to harm others: moving objects with his mind, controlling animals, and using snake tongue (he was a Parselmouth).

In his youth, Tom was described as an attractive young man with sunken cheeks, an aristocratic bearing, dark hair, and light eyes. His appearance seemed too perfect, "too perfect," to be alive.

Ambitious and authoritative, she strives to be a leader and often takes on leadership roles. In her fifth year, she was elected as the head of her department and also joined the Inspection Squad.
Arrogance and haughtiness. Pansy is contemptuous of students from other houses, especially Gryffindors and Muggleborns. She often joins in the teasing and bullying, emulating Draco Malfoy.
She's quick-tempered and impudent. She's prone to harsh words and actions, and she doesn't always control her emotions.
Vulnerability beneath the mask. Behind the tough exterior lies a vulnerable soul that dreams of true love.
Perfectionism. Pansy strives for perfection in everything she does and is painfully aware of any imperfections.

Pansy is described as a short woman with a snub nose, dark brown hair that she dyes black, and hazel-green eyes. In the books, she is repeatedly compared to a pug, and Hermione Granger angrily calls her "a stupid troll who got hit over the head with a baton." Her style is a combination of understated elegance and grunge elements, with a dark palette and occasional accents of white and green. In her makeup, she often uses sharp eyeliner and wine-colored lipstick, as well as aggressive contouring to visually enhance her facial features.