Who is credited as a Sonic creator alongside Yuji Naka and Naoto Ohshima?

Hirokazu Yasuhara is credited as a Sonic creator alongside Yuji Naka and Naoto Ohshima. The trio formed the core creative team behind the original Sonic the Hedgehog for Sega.

Naka was the lead programmer, building the technology and high-speed movement that shaped the game. Ohshima designed Sonic and helped establish his visual identity as Sega’s new mascot. Yasuhara served as the principal game and level designer, creating the stages and challenges that made Sonic’s speed playable rather than merely flashy.

The three roles are sometimes blurred in casual discussions, leading people to describe Naka alone as Sonic’s creator or to credit Ohshima alone because he designed the character. The more complete historical credit recognizes all three: programming, character design, and level design. Yasuhara later continued working on major Sonic projects, including Sonic the Hedgehog 2, developed with Sega Technical Institute in the United States.