Espada Number 9 (Noverno)
|Resurrección||Glotonería (Gluttony)/Gurotoneria (Eating Hollow)|
|Homeworld||Soul Reaper World|
|Kaipuden||39 (Physically) 390/391 (Actual)|
|Shippuden||39 (Physically) 393/394 (Actual)|
|Shippuden||White Army, Espada|
|Shippuden||Episode ?? or ???|
Aaroniero was a Gillian, the weakest class of Menos, before becoming an Arrancar, and the last of the first-generation Espada.
At some point in the past, Aaroniero gained the powers of former Soul Reaper lieutenant Kaien Shiba by absorbing Metastacia, the Hollow who killed and fused with Kaien. By doing this, Aaroniero was able to gain not only Metastacia's power to fuse with others but Kaien Shiba's powers and abilities as well as his Zanpakuto.