- Yo-kai Watch 3: Befriendable Yo-kai.
- Yo-kai Watch Busters 2: Befriendable Yo-kai.
- Yo-kai Watch: Wibble Wobble: Playable Yo-kai.
Josper is simply just Whisper wearing a jester hat that's split into three colors: a purple and white diamond pattern on the right, and black on the left.
He appears to carry a purple scythe with a split dark and medium gray blade with a purple gem.
Josper along with the other Card Yo-kai are obtained by scanning QR codes.
- Scan the QR code in Josper's medal in the bank and receive the Joker's Card.
- With this item, Josper will now show up in the Hazeltine Mansion in the Bathroom of the 1st floor, where you can battle him in a daily battle.
Josper can be freed from the Crank-a-kai by using a Dream Coin.
| Tolerance of attribute attack|
Strong × ⇒ △ ⇒ - ⇒ ○ ⇒ ◎ weak
When receiving favorite food: "This is delish!"
When being befriended"Oh my, your power is no joke, is it? Fancy adding a joker to your pack?"
Josper is a portmanteau of Whisper and "Joker", as in the playing card.
Josper's design is based on the black Joker in French suits. The name "Whisbaba" refers to baba-nuki (ババ抜き), a Japanese variant of the card game "Old Maid" where instead of adding/removing a card to create an unmatchable one, one joker card is added.
In other languages
- Italian: Jolly Whisper