hansi (飯時, lit. meal time), also known as Shinichi Tahara, is an illustrator most known for creating the fan-made derivative of Hatsune Miku called Hagane Miku as well as the fan-made Vocaloid group Hagane Vocaloids. He also provides illustrations for producers.
While most of his art is used for rock or metal songs, he has been known to draw for pop songs as well, such as Rocket☆Booster by Gumi. The video with the most views that uses his artwork is potato-head in wonderland (Utsu-P), which has gotten a little over 100,000 views and debuted at #10 on the Weekly Vocaloid Rankings.