villain vs persona

villain and persona both are nouns.

Word	Noun	Adjective	Verb	Adverb
villain	Yes	No	No	No
persona	Yes	No	No	No

As nouns, persona is a hypernym of villain; that is, persona is a word with a broader meaning than villain:

Other hypernyms of villain include character, part, role, theatrical role.

villain (noun)	persona (noun)
a wicked or evil person; someone who does evil deliberately	(Jungian psychology) a personal facade that one presents to the world
the principal bad character in a film or work of fiction	an actor's portrayal of someone in a play