
Japan may love Mario, but they have a couple wrong ideas about the series. For example, did you know that in the Japanese versions of Mario, Goombas are called “kuribo,” which translates to “chestnut guy?” For three decades now, it has been widely believed in Japan that the Goombas are, indeed, chestnuts.
Until now. Thanks to the official Nintendo Line Messenger bot, Japanese netizens have learned the shocking truth about Mario’s oldest enemy: they’re not chestnuts, they’re shiitake mushrooms!
Read on and see for yourself the aftermath that shocked Japanese gamers all over the internet.
Recently, Nintendo released an automated bot to respond to messages people send via the popular Japanese smartphone messaging system Line. The idea is that users are talking to one of the game’s mushroom-headed Toads, and he’ll respond to pretty much anything you say.
One Japanese Twitter user discovered that if you just start throwing Toad a bunch of Nintendo character names, he’ll tell you what he thinks about them. Little did the Twitter user know what was in store… (translation below):
最後とんでもない新事実が判明してしまったんだけど pic.twitter.com/aJwU0vMPLt
— イズナウェイ (@dokasu_127) September 29, 2015
Q: Mario.
A: Our hero!
Q: Peach.
A: Always beautiful and smells nice.
Q: Koopa.
A: Scary. *shiver shiver*
Q: Boo.
A: I heard he won last year’s red light/green light national championship.
Q: Luigi.
A: The little brother and green friend.
Q: Toad.
A: The one with the red spots. He’s not me, but he’s my friend, so don’t get us mixed up!
Q: Yoshi.
A: Our green friend. He let me ride him the other day.
…and here’s the big one:
Q: Goomba.
A: They’re not actually chestnuts. They’re shiitake mushrooms!
▼ Mind blown mushroomed.

Of course this isn’t news to anyone who subscribed to the “Ask the President” column on the official Japanese Nintendo website, during which the late president of the company Satori Iwata and general manager of development Takashi Tezuka discussed this exact question some time ago. Here’s a translation of their conversation:
Iwata: “By the way, is it an accident that Goombas look a lot like mushrooms?”
Tezuka: “Oh, they’re actually based on shiitake mushrooms.”
Iwata: “What? Shiitake mushrooms? (Laughs) They’re not chestnuts?”
Tezuka: “That’s right.”
Iwata: “…This is quite a shock. I didn’t even know this (laughs).”
Of course when you think about it, very few of the Mario enemies’ names make sense to begin with. But still, for Japanese netizens who grew up thinking they were stomping on chestnut people this whole time, it was like learning that the “Super Mario Brothers” were actually just similar-looking neighbors. Here’s some of their reactions:
“W-w-w-w-what?!”
“All these years. I had no idea.”
“Well, I guess they do live in the Mushroom Kingdom, so it makes sense.”
“No way! Next thing they’ll tell us is that Princess Peach isn’t actually a peach!”
We may have some bad news for that last guy….
Source: Twitter/@dokasu127 via Hachima Kikou, Official Nintendo Japan
Featured/top image: Flickr/Alpha (Edited by RocketNews24)

Japanese commenters hypothesize the source of a Goomba’s Killer Touch
This “shiitake mushroom” is one of the most mind-blowing pieces of Nintendo fan art ever【Video】
Super Mario 3D World’s new Goomba Cat will cute your face off
Goombas defeated at Universal Studios Super Nintendo World — Animatronics fall off Mario mountain
Our Reporter Discovers Penis Disguised as Goomba, Nintendo’s Online Police on the Case Moments Later
Kyoto temple bans visitors from wearing kimono
Japan’s first fall color forecast for 2026 is here!
Starbucks Japan adds new Sweet Potato Frappuccino and Latte to the menu, but do they deliver the taste of autumn?
Lego PlayStation recreates Sony’s original console, makes unusual choice for games to salute
American tourist in Japan arrested on charges of attempted murder and arson
Starbucks Japan reveals new Tsukimi Moon-Viewing drinkware and gifts for autumn 2026
A real-world Pokémon Poké Ball hotel is opening in Japan at a still-secret location [Video]
Solo travel in Japan: $3 all-you-can-drink deal at this conveyor belt restaurant is a fun time for one
Japan’s revolving sushi restaurant king Sushiro coming to U.S. this fall with high prices, no tipping
German woman rescued from Mt. Fuji after suffering altitude sickness symptoms, hiking to peak anyway
Japan’s final Penguin Suica train cards have already shipped, and when they’re gone, they’re gone
Studio Ghibli unveils new anime calendars and diary planners for 2027
Solo travel in Japan: Hidden beer garden in Tokyo is a haven for single visitors
Hobonichi unveils new 2027 planners, diaries and stationery with One Piece, Suica Penguin, Hello Kitty and a must-buy Mini Techo
Farewell Final Ceremony announced for Tokyo’s life-size Gundam statue, will stream live
Family Mart releases new Human Made Cup Noodle in Japan, with freebies for Nigo fans
Japan approves foreign resident visa renewal fee increases of up to 967 percent, starts soon
One Piece Day 2026 brings new art, music, and new cast announcements
Hikaru Utada sings new song in Shinkansen commercial for Japan’s Supreme Class cabins
12-year-old British girl who went missing in Tokyo found safe after visiting anime sites around Yokohama
7-year-old boy left behind on Mt. Fuji by his own dad
Sushi Bus: Japan’s first conveyor-belt bus lets you eat sushi while sightseeing around Tokyo
Pokémon Center Online designates first Pokémon items that will require Japanese ID card to buy
Japanese toilet aims to attract foreign tourists but not everybody is happy about it
New Japanese vending machine at Shinkansen station sells cups of ice on platform
Study finds hundreds of people in Indonesia legally named after Naruto, Inuyasha, other anime stars
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Studio Ghibli has a new anime out, and there’s only one place in the world where you can see it
Starbucks Japan releases new drinkware and goods for Valentine’s Day
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Tokyo subway installing new ticket gates that don’t accept payment through Suica or other IC cards
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
Super Mario Bros. creator explains how and why he designed World 1-1 of the 8-bit classic 【Video】
Super Mario taking on a new platform: candy!
Nintendo confirms that yes, Mario is punching Yoshi in the back of the head in Super Mario World
The more you know Mario: The unusual Japanese names of Nintendo’s Super Mario characters
Tokyo’s Super Mario Christmas decoration displays are super cool【Photos】
Download it quick! Super Mario 64 Last Impact is a huge, full-length fan game available now
The trailer for the Super Mario Bros. CG animated movie is finally here【Video】
“Super Real Mario Odyssey” video ponders what trouble Mario may get into in upcoming Switch title
Super Mario meets Gelato Pique in Japan’s coziest and latest loungewear sets
Bros? Kart? Party? Japanese gamers pick their top 5 Mario series
Super Mario Maker gets an official release date, will be playable at Best Buy soon【E3 2015】
In search of the fabled Mario mushroom ice cream treat
Mario isn’t number one? Nintendo plumber doesn’t win Super Mario series character popularity poll
Nintendo’s Super Mario throws out first pitch at professional baseball game in Japan[Video]
Culinary cosplayer shows how to make a Super Mario Yoshi egg sandwich