Nanachi

A mysterious being who rescues Reg and Riko in the Cup of Giants. Nanachi is a Hollow, or somebody who's body was mutated by ascending from the Abyss's sixth layer; while Hollow are usually monstrous in appearance, Nanachi somehow gained the form of a cute bunny humanoid.

Nanachi is a so-called "Final Form"—a survivor of ascension from the sixth level of the Abyss. Madness and death are not uncommon results of such an attempt, but due to certain circumstances, Nanachi was able to keep their personality and mental faculties intact. Their body, however, was deformed beyond recognition.

According to the perfume released with the Blu-ray of the third movie, the base of Nanachi's ears smell caramellic; similar to cotton candy.