Cero Oscuras

is an Arrancar variation of the Cero technique. It is used by Ulquiorra Cifer in his Resurrección and Resurrección: Segunda Etapa, Murciélago.

Description
A black Cero used by Ulquiorra in his Resurrección form. He compares it to Ichigo's black Getsuga Tenshō. It covers any exposed light in pitch darkness. Though the only Espada shown to utilize this technique so far, Ulquiorra told Ichigo Kurosaki "This is an Espada's fully powered Black Cero". Ulquiorra referred to it as "our Cero". The Cero Oscuras' range is vast and its attack power is massive. It shattered Ichigo Kurosaki's entire Hollow mask, critically injuring him in the process. It destroyed half of the dome over Las Noches. The Cero Oscuras is far more powerful than an average Cero.