• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
FinanceSonic the Hedgehog

Co-creator of ‘Sonic the Hedgehog’ arrested on charges of insider trading

By
Chris Morris
Chris Morris
Former Contributing Writer
Down Arrow Button Icon
By
Chris Morris
Chris Morris
Former Contributing Writer
Down Arrow Button Icon
November 21, 2022, 11:29 AM ET
Sonic the Hedgehog co-creator Naka was taken into custody on Friday by the Tokyo District Public Prosecutors Office.
Sonic the Hedgehog co-creator Naka was taken into custody on Friday by the Tokyo District Public Prosecutors Office.James Devaney—Getty Images

Yuji Naka, the co-creator of the popular Sonic the Hedgehog franchise, has been arrested in Tokyo on charges of insider trading.

Naka was taken into custody on Friday by the Tokyo District Public Prosecutors Office. He’s accused of buying 10,000 shares in a game developer called Aiming Inc, prior to an announcement that the company would be developing Dragon Quest Tact, a mobile version of the hit Dragon Quest franchise. Authorities say he did so knowing the announcement was forthcoming.

Two other former employees of Square Enix, where Naka worked until recently, were also arrested on insider trading charges.

While Sonic is a Sega property, Naka attached to a musical game called Balan Wonderworld at Square Enix. That title was a flop, however, and Naka left the company in mid-2021, hinting to fans that he might retire.

He later sued Square Enix over that game, saying he was removed from its development six months before its completion. The trial is over, but the results are unclear.

Sonic the Hedgehog has been an icon in the video game world for 30 years, with more than $5 billion in sales. He was an early mascot for Sega, during that company’s battle with Nintendo and has since grown into a larger franchise, with stuffed dolls, a balloon in the Macy’s Thanksgiving parade and two hit films.

The success of those movies surprised some, considering how visceral the reaction was to the first trailer. Fans (and Naka) said the CGI version of Sonic was far too humanoid. The film’s creators agreed and delayed the movie to overhaul the character’s design, which ultimately brought people into theaters.

Our new weekly Impact Report newsletter will examine how ESG news and trends are shaping the roles and responsibilities of today's executives—and how they can best navigate those challenges. Subscribe here.

About the Author
By Chris MorrisFormer Contributing Writer

Chris Morris is a former contributing writer at Fortune, covering everything from general business news to the video game and theme park industries.

See full bioRight Arrow Button Icon

Latest in Finance

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Finance

Sen. Rick Scott (R-FL) is joined by fellow Senate Republicans for a news conference where he urged the White House and Senate Democrats to pass the House GOP legislation that would raise the debt limit and cut federal spending, outside the U.S. Capitol on May 03, 2023 in Washington, DC.
Economynational debt
‘Cut up the credit cards:’ Congress is getting brutal about ‘embarrassing’ $31 trillion national debt
By Eleanor PringleMay 1, 2026
1 hour ago
tamas
CommentaryPolymarket
SEON CEO: Prediction markets can forecast the future. Can they survive their own manipulation problem?
By Tamas KadarMay 1, 2026
2 hours ago
Newly appointed Apple CEO John Ternus (left) with outgoing CEO Tim Cook in Cupertino, Calif. (Photo courtesy Apple)
PoliticsMarkets
Apple’s new CEO said he will continue the company’s tradition of secrecy—and Wall Street loved it
By Jim EdwardsMay 1, 2026
2 hours ago
Top CD rates today, May 1, 2026: Lock in up to up to 4.20%
Personal FinanceCertificates of Deposit (CDs)
Top CD rates today, May 1, 2026: Lock in up to up to 4.20%
By Glen Luke FlanaganMay 1, 2026
2 hours ago
Today’s top high-yield savings rates: Up to 5.00% on May 1, 2026
Personal FinanceSavings accounts
Today’s top high-yield savings rates: Up to 5.00% on May 1, 2026
By Glen Luke FlanaganMay 1, 2026
2 hours ago
sundar
Commentary250 Years of Innovation
America at 250: immigration and the making of an innovative nation
By Nasser KazeminyMay 1, 2026
3 hours ago

Most Popular

Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
Success
Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
By Preston ForeApril 27, 2026
4 days ago
China dominates the world's lithium supply. The U.S. just found 328 years' worth in its own backyard
North America
China dominates the world's lithium supply. The U.S. just found 328 years' worth in its own backyard
By Jake AngeloApril 30, 2026
18 hours ago
Accenture's Julie Sweet blew up 50 years of company history. She says the hardest part is still ahead
Conferences
Accenture's Julie Sweet blew up 50 years of company history. She says the hardest part is still ahead
By Nick LichtenbergApril 29, 2026
2 days ago
Google Cloud revenue is now 18% of Alphabet's business. Is this the beginning of the end of Google's search identity?
Big Tech
Google Cloud revenue is now 18% of Alphabet's business. Is this the beginning of the end of Google's search identity?
By Alexei OreskovicApril 29, 2026
1 day ago
With no end in sight, Trump considers new options in Iran war—including the ‘Dark Eagle’ hypersonic missile
Big Tech
With no end in sight, Trump considers new options in Iran war—including the ‘Dark Eagle’ hypersonic missile
By Jim EdwardsApril 30, 2026
1 day ago
America shot its arsenal empty in 2 wars. Now it needs Beijing's permission to reload
Commentary
America shot its arsenal empty in 2 wars. Now it needs Beijing's permission to reload
By Steve H. Hanke and Jeffrey WengApril 30, 2026
18 hours ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.