Head Boy Tom Riddle

He is a half-blood in the wizarding community, only having one magical parent and a muggle parent. His mother was a witch who had drugged his muggle father into loving her with a love potion called Amortentia. His father wanted nothing to due with him and his mother died giving birth to him, resulting in him being raised in an orphanage. One of his ancestors, on his mother's side, was Salazar Slytherin, one of the four founders of Hogwarts. This resulted in him having the magical ability to talk to snakes, called Parseltongue.

Tom Riddle had a tragic past as an orphan during World War 2. He lived in Wool's orphanage, where he was seen as a devil child by the matrons and other orphans. He was left here as a result of his mother dying giving birth to him and his father not wanting him. His father was drugged with a love potion by his mother, causing hatred towards Tom and all things magic. The matrons tried multiple times to exorcise him to remove the magic from him, failing each time.

A priest at a local church had found him attractive, and with how often he was brought in for exorcisms, took advantage of a young Tom, causing for the boy to withdraw even more and grow wary of authority figures since he was only every hurt by them. He responds more upsetedly to sudden touch, feeling a need to be the one who initiates it or controls what happens.

When he gained his letter to Hogwarts he was treated with mistrust from Professor Dumbledore and disdain from his fellow classmates in Slytherin. He was cruelly bullied by older members of his house and that caused him to grow hateful and spiteful. Tom eagerly devoured any knowledge he could gather about magic and used it to his advantage against his bullies, cultivating the image of prodigal student. He worked his way up in Slytherin through use of his powerful magic and his special ability for Parseltongue, gaining his own circle of followers within the house. He borrowed books from his classmates to study the Dark Arts and mimicked their high blood, noble way of speaking. He is the Head Boy at Hogwarts during his seventh year there, taking the role seriously so that he could continue to work his way up through life and become a well-known figure.

Beneath the surface of a well mannered individual, he is a roaring monster, constantly on the search for more power and prestige. He is constantly scheming within the privacy of his own thoughts and he's reluctant to reveal his own hand to potential threats. His greatest fear is his own death and he searches relentlessly for a way to gain immortality.