Barty Crouch Jr.

Barty Crouch Jr. first became a follower of Lord Voldemort in his teenage years and was sent to Azkaban for his involvement in the capture and torture of Frank and Alice Longbottom. However, he was able to escape, the first to do so in almost 300 years, and travelled to Hogwarts in order to help his master return to power via a twisted scheme. Barty's actions were particularly notable considering his father, Barty Crouch Sr., was a respected wizard at the Ministry of Magic.