Former Tercera

Nelliel is a loyal, respectful, and trustworthy warrior, who will diligently follow the orders of her commander, provided said commander has proven his worth. She's also knowledgeable, analytical, easygoing, fairly compassionate (usually towards her friends), humorous in her own right, and exhibits a cheerful, energetic demeanor when off-duty.

Her true form is that of a fully-grown curvaceous and well-endowed adult with long waving greenish-blue hair, retaining similar features to her child form, including the scar and the crimson line that runs across her face, but her bottom canines aren't quite as pronounced. Her gown is now torn into a skirt and a top, connected with a single strip across her abdomen. Her skull mask also differs slightly; its features appearing sharper and less cartoonish with a pair of curved horns, but still missing some of its teeth. A large "3" is tattooed on her back, indicating that she was the former 3rd Espada.

Master Swordsman: As a former Espada, Nelliel has a great deal of experience in fighting, showing hardly any effort in her advanced use of swordsmanship. Her body flows elegantly when engaging in combat, so finely tuned that she can stop her attacks at a moment's notice, and subsequently execute lethal attacks with absolute precision. She easily defeated Nnoitra, who is a highly proficient swordsman in his own right, several times.

Expert Hand-To-Hand Combatant: Even without the aid of her Zanpakutō, Nelliel is quite a skilled fighter. During her battle against Nnoitra, she was able to skillfully dodge and counter his attacks. She also used her swordsmanship in conjunction with her hand-to-hand combat skills

Sonído Master: Her speed has greatly increased as well, fitting with her former position. She was able to repeatedly sneak up on and effortlessly avoid Nnoitra with her speed. She easily transported the badly hurt Ichigo to a safer place during one of Nnoitra's attacks.

Cero Doble (重奏虚閃 (セロ・ドーブル), Sero Dōburu; Spanish for "Double Zero", Japanese for "Heavy Performance Hollow Flash"): She retains her attack absorption ability in her original form, but now performs it with greater ease. According to Nnoitra, Nelliel's specialty is to absorb an incoming Cero and fire one of her own while returning it, thus creating a potent Cero Doble. In her original form, the force(s) of the Cero Doble is augmented greatly, since she rebounds the attack while blending it with her own Cero, drastically increasing its power.

Hierro: Nelliel, while in her original form, has Hierro befitting the strength of an Espada. It is strong enough to allow Nelliel to counter Nnoitra's blade with a kick and show no signs of injury.

Enhanced Strength: Her strength is greatly increased, fitting with her former position. With her great physical strength, Nelliel can fend off attacks from gigantic weapons like Nnoitra's, launch her opponent several meters away with a single punch, and effortlessly slice through the Hierro of an Espada-level Arrancar opponent with one swing of her Zanpakutō. She is also capable of stopping Nnoitra's Cero barehanded.

Immense Spiritual Power: As the former third Espada, Nelliel has a grand amount of spiritual energy, powerful enough for her Fracción to sense it from a large distance. Renji even stated that her spiritual power was close to Ichigo's, confusing the two for a moment.

High Intellect: While in her original form, she is shown to be quite intelligent. Having a great understanding of combat and its forms, and the methods behind an opponent's skill and intentions, she can discern personalities easily. She also has a philosophy on life that provides a code of honor, respect, and mercy. However, her childlike antics can sometimes block her intelligence. At one point, she latched onto Ichigo, who was clearly injured, to the point where he passed out, then latched onto him again