Although he is a Kappa, he's not the same person as Faux Kappa.
- Yo-kai Watch: Forever Friends: Protagonist Yo-kai
- Yo-kai Watch: Wibble Wobble: Befriending Yo-kai
- Yo-kai Watch 4: Befriendable Yo-kai
In his Lightside form, he looks like a traditional Kappa. He has green scaly skin, a plate on the head, and a turtle shell on the back. Unlike most Kappa Yo-kai, it appears that he has no beak. The cap on his head is blue. He also has a blue striped tie, along with a briefcase, which he holds due to the fact that he is a salaryman.
In his Godside form, Kappa is much taller and has a blue cap with red spiral hair around it and a blue outfit with grey scales on the top of his back. He also has armbands and uses a monk's spade as a weapon.
Yo-kai Watch: Forever Friends
Kappa is one of Shin's friends.
Yo-kai Watch: Wibble Wobble
Kappa was available in the crank and on the first hidden stage during the Forever Friends event.
Kappa'ou Sagojou literally translates to "Kappa King Sagojou".