New Wizard of the Month at

Complete with the silver locket, one of the most ominous wizards in history is now featured on JK Rowling's official website:

Salazar Slytherin

Medieval (precise dates unknown)
One of the four celebrated Founders of Hogwarts School of Witchcraft and Wizardry, Salazar Slytherin was one of the first recorded Parselmouths, an accomplished Legilimens, and a notorious champion of pureblood supremacy.