yo fui quien

Yo fui quien les falló.

I was the one who let them down.

— Los excéntricos Tenenbaums (2001)

Yo fui quien te llevó la semana pasada.

I was the one who took you last week.

¿Acaso yo fui quien los mató?

Was I the one who killed them?

— Ip Man (2008)

Yo quiero que tú sepas que yo fui quien hizo eso.

I want you to know that I was the one who did that.

Yo fui quien le dijo que lo hiciera.

I was the one who told him to do it.

— Marty Supremo (2025)