Nyanko-Sensei is a Yokai/Ayakashi/Spirit that can shape-shift a little. Normally he is in his fat cat form, because he had been sealed in a lucky cat stature for ~40 years or so and got his form from this one ( Read more... )

Full Name: Nyanko-Sensei/Madara
Age: N/A
Series: Natsume Yuujinchou
Sector: Autumnus
Charms: none
Profession: none
Zero Hour Price: His ability to change back into his original wolf-looking form.