Ten Tailed Fox's Números

The Números (数字持ち（ヌメロス）, Spanish for "numbers", Japanese for "number holders") are the combat specialists and foot soldiers in the arrancar army.

Overview
The Números are assigned a two digit number at birth from 11 to 99 to indicate their age (Número 11 is the oldest, Número 99 is the youngest). The basic Número uniform consists of a white-collared jacket and robes held with a black sash. However, the uniform is customizable, giving each Número a sense of individuality. The fighting ability of the Números is thought to be superior to all other arrancar, except for the Espada (current and former). The strongest Números are chosen by the Espada to become their Fracción.