I checked all the trailers that shared here. I have enjoyed almost all movies of the respective trailers. Everyone's choice is different. Among all of that i think the Joker is the best villain. I noticed his acting, attitude or doing the bad things in the Dark Knight movie is remarkable. It seems that he was really a villain in real life while i enjoying this movie. So i choose the Joker as a best villain.

Sir @greece-lover. I hope you will see my comment. Thanks sir.