I've never seen him/it
I've never seen it.
En realidad, nunca lo he visto.
Actually, I’ve never seen it.
I've never seen him in my life.
Yo también salgo por la noche y nunca lo he visto.
I also go out at night and I've never seen him.
— Las noches de Cabiria (1957)
Nunca lo he visto actuar de esta manera.
I've never seen him act this way.
— El hombre de la Tierra (2007)
I've never seen him around here.