Tetsu Katano (片野 徹 Katano Tōru) was a programmer for the Sonic Team of Sega. Earliest examples of his programming work in the Sonic the Hedgehog series were the Special Stages in the Sega Saturn version of Sonic 3D Blast, and being one of the most foremost programmers on Sonic Jam. He later than became a Main Programmer on Sonic Adventure, Sonic Adventure 2, and Sonic Heroes, with his last programming work being the Sonic and the Secret Rings.