Sonic the Animation

Sonic the Animation is an experimental, animated short used for Sega theme parks and was later included in the compilation game Sonic Jam. Produced by Sega Software R&D Dept. 3 with the traditional animation provided by TMS Entertainment, the short combines hand-drawn 2D characters with 3D computer-generated environments. Although the character designs are practically identical to the games, the animation style mimics that of the western Warner Brothers cartoons that TMS was helping co-animate at the time, such as Animaniacs and Tiny Toon Adventures. The short has no spoken dialogue, but several pieces of music play throughout alongside some sound effects from the games. The short's only main characters are Dr. Robotnik and Sonic. (Source: sonic.fandom.com)