Thread:Shabook/@comment-24938557-20160402003641/@comment-112155-20160403162502

Villains category is reserved for main villains of a movie, TV show or other media, or villainous characters that particularly oppose one of the heroes.

Criminals category is used for people who committ regular crimes (that excludes terrorists, war criminal or other world-conqueror-wannabes) that either committ crimes or are imprisoned for them.

Some characters fulfill both requisites, but that doesn't mean they are interchangeable...