sovereign, ruler
El soberano se recuperó totalmente de su enfermedad.
The sovereign made a full recovery from his illness.
Soy el representante del soberano de todo el mundo.
I am the representative of the sovereign of the entire world.
Debes aceptar al rey de España como tu soberano.
You must accept the King of Spain as your sovereign.
Es nuestro soberano.
He is our sovereign.
— Aquarius (2016)