
It’s already kind of old news that one of gaming’s few potentially transgender characters has been hiding in plain sight since the late ’80s in the form of the adorable and misunderstood Mario villain, Birdo.
But that hasn’t stopped the Internet from debating all kinds of aspects about the character’s gender identity, from whether the whole “boy who thinks he’s a girl” thing is Mario canon or whether the character is pre- or post-op. While the Western web was shocked by this stunning news a while back, it seemed Japan was politely giving poor Birdo her privacy and staying out of it, until a recent Twitter post…
Birdo, once thought by many in the US and Europe to be called Ostro due to being mislabeled in the end credits of Super Mario Bros. 2, the first game in which she (or he!) appeared, is a curious creature. Birdo fires eggs at her enemies, and is even seen to protect the special crystals Mario and pals are after as if they’re her own offspring. She also wears a pink bow – the universal sign for “girl” in the old-school gaming world since Namco lazily slapped one on Pac-Man to create Ms. Pac-Man – so for most Birdo was clearly female.
Not so in Japan, apparently, where this recent tweet started a fire online.
“Birdo’s a dude?!”
こいつ男だったの…? pic.twitter.com/GA5GYBYNoD
— ラッキー (橋本雄生) (@hashitwi) January 5, 2015
If the rapidly growing number of retweets is any indication, a lot of Japanese Netizens are to this day being caught off guard by the big revelation of Birdo’s “true” gender. That probably has something to do with the fact that Super Mario Bros. 2 wasn’t really a thing in Japan until the game – which was actually a re-skin of a totally different Nintendo-developed game called Doki-Doki Panic – was later released in the country as Super Mario USA. Well, that and the fact that the character is called Kyasarin (Catherine) in Japan…
Since Super Mario Bros. 2, Birdo has made a bunch of appearances in other Mario games – mostly spinoffs like Mario Kart and Mario Party – and has become a beloved ally to Mario and pals, indicating Birdo, originally a villain, is probably confused about more than just her gender.
Nintendo of America has mostly kept mum on Birdo’s gender identity, which was originally mentioned in obscure promotional materials for Super Mario Bros. 2, possibly because the character turned out to be more than just a throwaway villain with a quirky, one-sentence backstory. Nintendo’s Japan branch hasn’t been as shy about it, as the above Twitter image – which depicts Mario game screens on systems as recent as the Wii U – seems to prove, but it appears it’s still brought up infrequently enough that most Japanese gamers just assume she’s a girl in the traditional sense.
Anyway, while Birdo herself is free to gender-identify however she’d like, the relative paucity of background on the character has led to some speculation that Nintendo of America has quietly retconned Birdo into a regular female… dinosaur… thing. If such a retcon were true, it would at least explain where she gets all those eggs, as laying eggs isn’t something male animals are particularly known for. But it would also mean that, since Nintendo Japan is still characterizing Birdo as a boy, the company has inadvertently created two alternate timelines for the hapless creature and the entire Mario universe, which could hold some Dwayne McDuffy Grand Unification Theory-level implications for the franchise.
All of this is to say that, until Nintendo puts out an official statement or some psychology major somewhere decides to write a doctoral dissertation on the subject, we may never know Birdo’s true gender.
Images via Wikipedia


The more you know Mario: The unusual Japanese names of Nintendo’s Super Mario characters
Super Mario is officially a plumber again, Nintendo says
New voice of Super Mario for CG movie is Chris Pratt, Donkey Kong also will appear
Super Mario isn’t a plumber, Nintendo officially says
Reminisce on over 30 years of Mario games with this sweet Evolution of Super Mario tribute【Video】
Japan now has a “for foreign tourists only” Mt. Fuji sightseeing train[Video]
Nissin Donbei to sell Classic line of instant udon and soba noodles for its 50th anniversary
Create a tiny Ghibli anime world on your bookshelf with new miniature papercraft art kits
Studio Ghibli releases the My Neighbour Totoro tea caddy, with a magical self-closing lid
Starbucks Japan releases new My Fruit³ Frappuccino at only 34 stores around the country
Mister Donut wows matcha lovers in Japan with new Dora Matcha doughnuts
Starbucks Japan adds exclusive limited-edition Frappuccino drinks to the menu for spring
Fake police phone scam also highlights dumb stereotype about how foreigners speak Japanese[Video]
A secluded British mansion in Chiba is a hidden holy land for afternoon tea lovers
Hokkaido park’s “sakura on the ground” are a breathtaking reason to venture beyond Sapporo
Japanese onsen egg maker from 100-yen store Daiso needs to be on your shopping list
Cherry blossoms begin blooming in Japan with record-early starts for sakura season
Tokyo government organizes food truck event to clear out delinquent/homeless teen gathering area
The next time you’re feeling stressed out, you could relax on a Pokémon Psyduck chair from Japan
Train station platform ramen store closes its doors on half a century of history in Tokyo
Nine amazing off-the-beaten-path cherry blossom spots in Japan for yaezakura and shidarezakura
Stunning central Japan wisteria festival is like a purple fantasy straight out of a Ghibli movie
When will the cherry blossoms reach full bloom in Japan this year?[Forecast]
Studio Ghibli adds new Mother’s Day gift sets to its anime collection in Japan
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
Studio Ghibli releases Catbus pullback keychain that runs like the anime character
Nine great places to see spring flowers in Japan, as chosen by travelers (with almost no sakura)
Starbucks Japan releases first-ever Hinamatsuri Girls’ Day Frappuccino
Virtual idol Hatsune Miku redesigned with look that adds new elements and brings back old ones
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
Title of Super Mario movie sequel briefly revealed, sounding very familiar, then gets removed
Mario Segale, the man whose name inspired Nintendo’s “Mario,” dies at age 84
Super Mario T-shirts make an encore appearance at Uniqlo as part of UT Archives【Photos】
Nintendo renames Mario character Blackie to Spike in Japan
Nintendo finally releases the Elephant Mario plushie【Photos】
Super Mario Bros. animated movie seemingly going deep in Nintendo lore with return of classic foe
The trailer for the Super Mario Bros. CG animated movie is finally here【Video】
Super Mario Maker update doubles down on creepy “Skinny Mario” with weird easter egg【Video】
Super Mario voice actor Charles Martinet “stepping away” from voicing Nintendo characters
Nintendo reportedly close to agreement for U.S.-produced animated Super Mario Bros. film
Mario isn’t number one? Nintendo plumber doesn’t win Super Mario series character popularity poll
Final Fantasy’s Sephiroth joins Smash Bros., intent on shanking Mario and Zelda, taking off shirt
Nintendo’s Mario Maker lets you do exactly what it promises 【E3】
Nintendo is coming to iPhones with Super Mario Run for iOS devices
Keep running right with new line of Super Mario Bros-themed sneakers from Converse
Super Mario Maker gets an official release date, will be playable at Best Buy soon【E3 2015】