I haven't seen him/it
Tom llegó hace diez minutos, pero yo no lo he visto todavía.
Tom arrived ten minutes ago, but I haven’t seen him yet.
No lo he visto desde que se mudó a Los Ángeles.
I haven't seen him since he moved to Los Angeles.
No lo he visto en todo el día.
I haven't seen him all day.
I haven’t seen him for ten years.
En cuanto a su maletín, no lo he visto desde Tokio.
As for his briefcase, I haven't seen it since Tokyo.
— Bullet Train (2022)
No lo he visto en la ciudad hace bastante tiempo.
I haven't seen him in town for quite some time.
— O Auto da Compadecida (2000)
I've never seen it.
I haven't seen him lately.