Sonic News Network
Sonic News Network
This article is about a real-life person.
Information in this article is about real-life people, companies, and objects, and does not relate to the in-universe Sonic series.

Yasushi Yamaguchi (山口 恭史 Yamaguchi Yasushi?) (also known as Judy Totoya) is a game designer and artist. He designed the character Miles "Tails" Prower in an internal contest hosted by Sonic Team. He originally named the character "Miles Prower", with the "Tails" name tacked on as the name. Yasushi Yamaguchi sneaked in his name though, and "Tails" had become the nickname.

His main work was that of both creating and designing Tails as well as being the Chief Artist and one of Zone artists in Sonic the Hedgehog 2. He also worked as the Special Stage Designer in Sonic the Hedgehog CD and on other Sega related games.




  • Yamaguchi has created artwork based on the Sonic series since having left Sega. In January of 2015, he created artwork of Sonic and Tails based on Sonic the Hedgehog 2, and in 2018 he created a digital artwork of Tails to celebrate the 25th anniversary of the character and the new year.