The
evil twin is an
antagonist found in many different
fictional genres. They are physical copies of
protagonists, but with radically inverted
moralities. In filmed entertainment, they can have obvious physical differences with the protagonist—such as
facial hair (often a
goatee),
eyepatches,
scars or distinctive clothing—that make it easy for the audience to visually identify the two characters. Sometimes, however, the physical differences between the characters will be minimized, so as to confuse the audience. Both
roles are almost always played by either the same actor or the actor's actual twin (if the actor has one).