Nanachi

Nanachi (ナナチ) is the tritagonist of Made in Abyss. They are a Narehate, a person who survived the 6 Layer's Curse and was left deformed as a result; however, unlike most other Narehate, Nanachi retains a sound mind. Possessing vast knowledge of The Abyss' ecosystem, vegetation, and even the use of medicines, they join Riko and Reg on their descent through The Abyss. Their gender is ambiguous.