persona (n.)

1917, "outward or social personality," a Jungian psychology term, from Latin persona "person" (see person). Used earlier (1909) by Ezra Pound in the sense "literary character representing voice of the author." Persona grata is Late Latin, literally "an acceptable person," originally applied to diplomatic representatives acceptable to the governments to which they were sent; hence also persona non grata (plural personæ non gratæ).