Simon Oxley, Creator of the Twitter Bird and GitHub Octocat, Dies at 56

Twitter’s blue bird and GitHub’s Octocat.
Simon Oxley, the designer behind two of the most recognized icons in the tech industry, died on April 4, 2026, at the age of 56.

Both were stock illustrations sold for a few dollars on a microstock site.
Oxley himself didn’t even know his bird had been adopted by Twitter for three years.

Icons Born from Stock Photos

Oxley was a freelance illustrator from Kingsclere, Hampshire, England, working under the name “Idokungfoo.”
Around 2004, he discovered the microstock photo site iStockphoto and began uploading vector illustrations.

Microstock differs from traditional photo agencies by selling royalty-free images at low prices, typically a few dollars to around ten.
For creators, the low per-unit price means cranking out volume — a “sausage factory” model.
Oxley thrived in this environment, producing illustrations at a prolific pace and eventually being commissioned by iStockphoto’s CEO to redesign the site’s logo.

Then in 2006, a single geometric blue bird illustration he uploaded to iStockphoto would change tech history.

Twitter’s Blue Bird

In 2006, Twitter’s founding team was looking for a friendly visual for their new SMS-based service.
They found Oxley’s bird illustration on iStockphoto and purchased it for $10–$15.
After the platform’s commission, Oxley’s cut was a mere $2–$6.

Oxley had spent only about 30 minutes on the bird.
The design was inspired by Japanese aesthetics — simple angles and curves.

Co-founder Biz Stone named the bird “Larry,” after NBA legend Larry Bird.

Three Years in the Dark

Oxley didn’t realize his bird had become Twitter’s icon until 2009.
He was at home drinking a beer and watching TV when his own design appeared on CNN.

“I checked the label on my beer, then called my wife over to look at the screen.”

That’s how he described the moment in an interview.

The Royalty-Free Catch

Here’s where things got complicated.
iStockphoto’s royalty-free license included a clause prohibiting the use of purchased images as registered trademarks or exclusive corporate logos.

A royalty-free license lets buyers use an image without restrictions on frequency or duration after a single purchase.
But “use anywhere” doesn’t mean “use for anything” — most stock photo services explicitly prohibit trademark registration.
The rationale: since other buyers can purchase the same image, it’s not intended for exclusive brand identity.

This restriction meant Twitter couldn’t keep using Oxley’s original design indefinitely.
In 2012, Twitter’s in-house design team created a redesigned bird logo — the sleeker version most people remember.
In 2023, Elon Musk rebranded Twitter to X, retiring the bird logo entirely.

flowchart TD
    A[Oxley creates bird illustration<br/>Time spent: ~30 minutes] --> B[Uploaded to iStockphoto<br/>2006]
    B --> C[Twitter founding team discovers it<br/>Purchased for $10–$15]
    C --> D[Oxley's cut: $2–$6]
    C --> E[Adopted as Twitter's icon<br/>Nicknamed "Larry"]
    E --> F[Oxley unaware for 3 years<br/>Discovers it on CNN in 2009]
    E --> G[License issue surfaces<br/>Stock images can't be trademarked]
    G --> H[Twitter redesigns in-house<br/>2012]
    H --> I[Rebranded to X<br/>Bird logo retired 2023]

The Birth of GitHub’s Octocat

Around the same time as the Twitter bird, in 2007, Oxley uploaded another fateful illustration to iStockphoto.
A chimeric character with a cat’s head and five octopus tentacles, titled “Octopuss.”

In 2008, GitHub’s founding team was looking for a humorous illustration for their 404 error page.
They found “Octopuss” on iStockphoto and decided to use it.
Unlike the Twitter case, GitHub reached out to Oxley directly and negotiated exclusive usage rights.

The character was renamed “Octocat” and became an explosive symbol of the open-source community.
GitHub hired illustrator Cameron McEfee to create numerous Octocat variations.
A gallery called “Octodex” was launched where the community could submit their own Octocat derivative illustrations.

The “octopus merge” Connection

The name “Octocat” also plays on the Git technical term “octopus merge.”
An octopus merge is an operation that merges three or more branches simultaneously.
A regular merge combines two branches, but an octopus merge can integrate multiple branches at once.

# Regular merge (2 branches)
git merge feature-branch

# Octopus merge (3+ branches merged simultaneously)
git merge feature-a feature-b feature-c

The image of an octopus’s multiple tentacles grabbing multiple branches at once fits perfectly.
Oxley didn’t design it with this Git term in mind, but the coincidence gave the name an extra layer of meaning.

Oxley’s Notable Design Work

Work	Company	Year	Acquisition Method
Blue bird icon	Twitter	2006	Purchased on iStockphoto for $10–$15
Octocat	GitHub	2007–2008	Exclusive license negotiated
Puffer Fish	Bitly	Unknown	Stock illustration
Sammy the Shark	DigitalOcean	Unknown	Direct commission
Pulumipus	Pulumi	Unknown	Direct commission

The acquisition methods differ sharply between early works sourced through iStockphoto and later direct commissions that came after his name was established.
The Twitter episode was the turning point in his career.

Twelve Years in Japan

Oxley came to Japan around 1999 and lived there for about 12 years until around 2012.
He started in Harajuku, later moving to Fukuoka where he built a life with his Japanese wife, Noriko.
In 2002, he founded Idokungfoo Studio and took on design work for Japanese companies.

Japan’s “kawaii” culture — especially the mascot culture exemplified by yuru-chara — had a profound influence on Oxley’s design philosophy.
Geometric yet approachable, composed of simple lines.
Both the Twitter bird and Octocat carry clear traces of this “kawaii” influence.

After returning to England, he settled in the countryside near Oxford, continuing freelance work while also creating surrealist abstract expressionist pieces on Dribbble and Saatchi Art.

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A 30-minute illustration that earned him $6 became an icon seen daily by over a billion users.
He seemed to find the whole thing amusing until the end.
The memorial on his portfolio site (idokungfoo.com) reads:

“Simon has passed away, but all his designs and ideas live on.”