Creating a villain takes a lot of work. Whether it's method acting, intense makeup, or CGI, there are a lot of components that go into making the "perfect villain." These actors had to go under intense processes in order to really make their characters come to light.
Maleficent - Angelina Jolie
Apparently, Angelina Jolie was so good in this role that she scared her own daughter, who was also filming on set at the time. Jolie had to undergo a lot of makeup to truly get into the role. The angular facial features were made possible by prosthetics!