Lord Voldemort, whose real name is Tom Elvis Jedusor, is a half-blood wizard, but more importantly, one of the most dangerous wizards. but above all one of the most dangerous wizards. He is also known as 'The Dark Lord', 'You-Know-Who', and 'He-Who-Must-Not-Be-Named'.
Tom was educated at Hogwarts, in Slytherin House. He is, in fact, the direct descendant of Salazar Slytherin. He is guilty of using the death spell "Avada Kedavra" on many wizards, like Harry Potter's parents.
He tries to kill Harry but the spell backfires. Afterwards, Voldemort disappeared for a few years before reappearing in Harry's fourth year at Hogwarts, thanks to Peter Pettigrow. Voldemort speaks Forklang, which allows him to communicate with snakes such as Basilisk and Nagini, his pet snake.
His wand is made of Yew wood and contains a Phoenix feather, just like Harry Potter's wand.