Mitty is a character from the anime series 'Made in Abyss'. Once a human, Mitty was transformed into a Narehate, or hollow, due to the effects of the Abyss' sixth layer. She has a grotesque, amorphous form but maintains a gentle and kind nature. In the series, Mitty forms a deep bond with Nanachi, another character who underwent a similar transformation. Mitty's tragic fate and the suffering she endured highlight the harsh realities and moral complexities present in the world of the Abyss.