Who is the first deviant in Detroit become human?

rA9 is reported by multiple deviant androids to be the first android to "Wake up" and become deviant, and that it would return and free the others of its kind. Other androids mention rA9 unintentionally without being aware of any meaning or reason for it, such as Ralph.

Was Alice a deviant?

It is unknown whether Alice became deviant or when she did. It might have also been possible that Alice was already a deviant before the story has started, as she has had emotional shocks and trauma before the events of the game from having an abusive "father", and the fact that she does not obey Todd.