Any type can go bad, but certain types have a more frightening and sinister version of bad when that happens.
Judge Judy scares me. She reminds me of my ESTJ grandmother, and I would guess that she is the same type. I have never agreed with a single thing that I have heard Judge Judy say, and she is a tyrranical, insensitive, controlling bully with a personal vendetta against anything N or P. An evil ESTJ cannot be reasoned with, becomes verbally aggressive and insensitive, is overbearing and will treat even the most valid excuses or explanations as if they are false rationalizations designed to be defensive of the victim's supposed laziness instead of a unique set of personally decided priorities. My grandmother sees me as irresponsible because I do not define success the same way she does, and she hates how impractical I am for being so concerned with what is ethical. She is the Anti-Snail! If we were to overlap in any way on any idea, the resulting explosion would probably destroy all of space-time and the universe would cease to exist. It would be a mystical event: a manifestation of a known impossibility.
An unhealthy INTP can be terrifying when the shadow side comes out, but an ENTJ might be worse if what I hear is accurate. I've never known one.