Minister Pius Thicknesse was a wizard and a Ministry of Magic official in the mid to late 1990s. During the Second Wizarding War, he became Head of the Department of Magical Law Enforcement and, later in the War, Minister for Magic under Lord Voldemort's puppet regime while under the Imperius Curse, replacing Rufus Scrimgeour, who had been murdered by Voldemort. Thicknesse took part in the final conflict of the War where he fought alongside the Death Eaters, still under their curse. He was ousted from power after Lord Voldemort's defeat and was succeeded by Kingsley Shacklebolt in his post of Minister for Magic.
His character token is found by using dark magic in Knockturn Alley.