Kappa (カッパ) is a recurring minor character, throughout the series, Natsume's Book of Friends.
He has a white disc on his head with a green body. His mouth is beak-like and is similar to a duck's.
On his back, he wears turtle-like shell.
He is a kind spirit that's willing to help Natsume after he was saved twice by him. When he caught fish, he searched for Natsume so they could share it together.
Takashi Natsume usually came across the kappa when he was dehydrated. Natsume helped him by pouring water over him. Thus, the kappa tries to help Natsume whenever he can.
He was the one that informed Natsume about the evil exorcist that deprived youkai of their blood. He mentioned that Natsume is a capable person since he knows a lot of powerful youkai, such as Misuzu and Benio.
- Main article: Takashi Natsume
- He is member of The Dog's Circle.
- His name isn't in the Yuujinchou.
- Although he probably has a proper name, this hasn't been revealed.
- The Kappa (translates to river-child) is a youkai that's found in Japanese culture.
- In Japanese culture, they're usually seen as being mischievous and deceiving youkai but in Natsume's Book of Friends, the kappa is helpful to others, especially towards Natsume.