Most of the time Nanachi is cool and reserved, keeping her distance emotionally and physically. Her attitude often borders on being sarcastic and even cynical. However behind this mask, Nanachi hides a kind and gentle soul, capable of deep compassion and selfless devotion. She is also quite bashful when complimented, seen in her reaction to being called "fluffy". She also express discomfort at being petted, especially by Reg. She sometimes says Naaa at the beginning of her sentences.