The owner and master of the Yo-kai Watch Elder! A girl in the Yo-kai Detective Agency who goes around exorcising Yo-kai.

Yoon Danah's younger brother! He doesn't believe in things like Yo-kai or ghosts!

The owner and master of the Yo-kai Watch Ogre! He is Yoon Danah's best friend. He protects his friends whenever something happens. A boy in the Yo-kai Detective Agency who goes around exorcising Yo-kai.

The owner and master of the Yo-kai Watch Animas! He can summon Genju with the Yo-kai Watch Animas... And use their power! With that power, he solves Yo-kai cases. He has a strong will to protect his friends.

One of Yoon Danah's best friends. She is popular at school for her cute appearance.

Yoon Danah's butler appearing in Yo-kai Watch Shadowside. A Yo-kai!

His whole body is red, while his belly and parts of his face are white. In Lightside, he is a small two-headed cat, but... When he enters Shadowside, he grows larger... And his strength increases. He loves chocolate bars very much.

A snake Yo-kai appearing in Yo-kai Watch Shadowside! His original form is a Yo-kai called Mitsumata Nozuchi, but?! In human form, he is a Yo-kai named Samsiki.

The form of a puppy that died under a stone statue and became a Yo-kai. His name before becoming a Yo-kai was Baekgu. After becoming a Yo-kai, his name is Komasan.

Komasan's younger brother. A frog Yo-kai.