Nel Tu, originally known as Nelliel Tu Odelschwanck, is a former Espada who was turned into a child due to an attack that caused her to lose her memories. Later, she regains her adult form and memories during the battle between Ichigo’s group and the Espada in Hueco Mundo.
Nelliel Tu Odelschwanck, or Nel for short, is a character from the anime and manga series “Bleach” by Tite Kubo. She is introduced as a small, good-natured, child-like Arrancar named Nel Tu, who has a broken mask and a missing rank as an Espada, the elite class of Hollows in the series. She quickly befriends Ichigo Kurosaki and his companions when they arrive in Hueco Mundo, the realm of the Hollows.
Nel’s true identity is that of the former 3rd Espada, Nelliel Tu Odelschwanck, who was betrayed by her fellow Espada, Nnoitra Gilga. During a confrontation, Nnoitra and his accomplice, Szayelaporro Granz, attacked her from behind, causing her to be severely injured and her mask to break. This injury resulted in her transformation into a child, and she lost her memories of her time as an Espada.
As the story progresses, during a battle where Ichigo and his friends are in grave danger, Nel’s memories and adult form are restored when her mask fully regenerates after Ichigo is attacked by Nnoitra. In her adult form, she is a powerful and skilled warrior, capable of holding her own against the Espada. She fights to protect Ichigo, displaying her former prowess and abilities, including her signature attack, “Lanzador Verde.”
After the battle, Nel’s transformation into her adult form is revealed to be temporary, and she reverts to her child form. She remains in Hueco Mundo after Ichigo and his friends leave, and her character continues to appear sporadically throughout the series. Nel’s story is one of loss, recovery, and the enduring spirit to protect those she cares about, despite the hardships she has faced.