The term 'Sonic the Hedgehog Developer' is referring to the video game company SEGA, which has four letters. SEGA is a Japanese multinational video game developer and publisher headquartered in Tokyo, Japan. It is known for its iconic franchises such as Sonic the Hedgehog, Virtua Fighter, and Yakuza. SEGA is one of the most successful video game companies in the world, having sold over 500 million units worldwide.