Mateo

Isabella is one of the Top 4 Espada and is one of the Ángeles (lit Angels)

Appearance
He is a dark skinned arrancar who has bloodshot eyes. He has a headband covering his eye and is sometimes seen carrying a large book.

Personality
From what is seen so far she is rather calm

Second Coming of Aizen Arc
She appears in the 16th chapter with the other Top 4 Espada also known as the Ángeles explaining the threat of the intruders to their master.

In The Philosophy of War he is seen with Emidio on Bone Hill. They had an argument about the concept of God. He then left to morn the loss of Pequeno.

Powers and Abilities
Vast Spiritual Power: Since she is one of the top 4 Espada its safe to say she posses a large ammount of spiritual energy.

Cero: Like all arrancar he can use Cero.

Bala: Like all arrancar he can use Bala.

Hiero: Since he is an arrancar he has Hiero

Sonido: Since he is an arrancar he can use Sonido

Zanpakuto
Unknown

Resurrección: Unknown
 * Resurrección Special Ability: Unknown

Quotes

 * Don't worry

Trivia

 * He seems to be an athiest