An antihero is a central character in a story, movie, or drama who lacks conventional heroic attributes such as courage and fortitude having darker traits such as greed, amorality etc, They usually all go by the belief that the ends justify the means.Examples of antiheroes are Dexter from Dexter and Magneto from X-men.
List of Antiheroes
Who are your favorite antiheroes in Tv series/movies?
For anime characters use this thread. Anime Antiheroes