Usuta-san resembles Whisper 2040, a white colored Yo-kai with similar hair & ears and wears a butler's uniform along with a similar grin. The only difference is he has short eyebrows, a grayish purple colored hair which lacks a wisp shape on top on his head, a round nose instead of a hollow nose, and has two legs.
He also has characteristics of Whisper in the original series, with the black line connecting around his two eyes with the same color.
Usuta-san is the butler of Itsuki's family, and aids him and his friends in their efforts.
- Despite his resemblance to Whisper, he doesn't appear to be the same Yo-kai.