Some of my fellow INFPs are in denial that there are any evil INFPs. The unflinching idealists they tend to be, they, tragically, seem to regard the personality type as being without a dark side. I'm here to help clear up that misconception.
Sorry fellow INFPs, there are evil characters of all personality types, including INFP.
My favorite evil INFP, and what I think is probably the archetypal evil INFP, is Sweeney Todd, the love-driven idealist whose entire worldview has been irrevocably shattered:
What are some other INFP villains you can come up with? Lets quash the myth once and for all that there is no dark side of the INFP!