Nelliel Tu Odelschwanck (ネリエル・トゥ・オーデルシュヴァンク, Nerieru Tu Ōderushuvanku) is an Arrancar and the former Tres (three) Espada. She was also known as Nel Tu (ネル・トゥ, Neru Tu) when she was small, good-natured, and childlike. Nelliel lives in Hueco Mundo with her adoptive brothers and former Fracción, Dondochakka Birstanne and Pesche Guatiche, and their pet, Bawabawa.