1 Dolores Umbridge
Is now in Azkaban for life.
More like Um-BITCH!
2 Lord Voldemort
Lord Voldemort is a fictional character and the central main antagonist in J. K. Rowling's series of Harry Potter novels. Voldemort first appeared in Harry Potter and the Philosopher's Stone, which was released in 1997.
Seven Horcruxes to become a snake man.
Even as a young child he killed a rabbit.
3 Bellatrix Lestrange
A psychotic death eater who escaped from Azkaban, and is fiercely loyal to Voldemort. Murderer of many people such as Sirius Black, and also a sadist who drove the Longbottoms mad.
I know that this is an unpopular opinion but I think she deserves #1
4 Lucius Malfoy
5 Barty Crouch Jr
6 Draco Malfoy
Draco Lucius Malfoy is a character in J. K. Rowling's Harry Potter series. He is a student in Harry Potter's year belonging in the Slytherin house.
DRACO IS NOT A BAD PERSON!
7 Narcissa Malfoy
8 Pansy Parkinson
Stupid girl made McGonagall send all the Slytherins to the dungeons in deathly hallows part 2.
She is the worst I hate how in Deathly Hallows she just wants to give up Harry.
9 Vincent Crabbe
10 Gregory Goyle
11 Vernon Dursley
12 Marge Dursley
Forget the other Dursley's, she might have only appeared at the beginning of the third book and was on a postcard in the first.
But this woman was the Muggle Umbridge.