- Yo-kai Watch: Befriending Yo-kai
- Yo-kai Watch 2: Befriending Yo-kai
- Yo-kai Watch Blasters: Befriending Yo-kai
- Yo-kai Watch: Wibble Wobble: Befriending Yo-kai
- Yo-kai Watch 3: Befriending Yo-kai
- Yo-kai Watch Blasters 2: Befriending Yo-kai.
- Yo-kai Watch animation: Recurring Yo-kai
A hazel-green clamshell with a zipper poking out of the right of its mouth. It has a long dark pink tongue and is shown holding a 500 yen coin with three gold coins floating around the top of it. Inside of the shell is a golden eye.
Spenp loves to be wasteful, he believes that spending money boosts the economy through "trickle-down economics" and that greed is good. In the English version, according to the Yo-kai Wiki, Spenp comes from the 1980s.
Once Spenp inspirits someone, they'll be compelled to splurge on things they don't even particularly want.
Spenp appears in shallows by the Western River on Breezy Hills.
Yo-kai Watch Animation Series
Spenp first appears in EP011, in which causes a streak of money wastes by Nate and his friends of the money they saved to buy a manga magazine (though in the English version, it was a video game). When confronted by Nate, he bluntly states it is fun to waste money and when asked by Nate about it, he counters asking if the economy would super-recover if no one is wasteful. After Nate and his friend win the manga magazine issue in a lottery, Spenp gives Nate his Yo-kai Medal. Nate states he wouldn't summon Spenp much.
He also makes an appearance in EP118.
Yo-kai Watch 2
Spenp can be found under vending machines in Shopper's Row. He can also be found in a test tube in Nocturne Hospital.
Yo-kai Watch 3
Spenp can be found in the alleyways in Sparkopolis.
| Tolerance of attribute attack|
Strong × ⇒ △ ⇒ - ⇒ ○ ⇒ ◎ weak
- Befriended: "You seem like a big spender. I like it!"
- Receiving food (favorite): "This is--!"
- Receiving food (normal):
- Receiving food (disliked):
- "Mudazukai" is a pun on mudazukai (Japanese: 無駄遣い "wasteful spending") and kai (Japanese: 貝 "shellfish, clam").
- "Spenp" is the word spend only with an upside down lowercase D, turning into a P.
- In Spanish, "Boquirroto" is a portmanteau of the work boquiabierto (agape) and roto (broke)
- When snapped in the Yo-kai Cam, his tip is, "Caveat emptor. That means, "Let the buyer beware.""
In Other Languages
- Japanese: ムダヅカイ Mudazukai
- Spanish: Boquirroto
- French: Claquille
- German: Prassa
- Italian: Sprek
- Portuguese (Brazil): Gastôncio
- Korean: 막써조개 Maksseojogae
- Chinese: 無節制怪 (HK) or 亂買貝 (TW)
- Arabic: بذرقة