Soundfuls have six arms, six legs, and four eyes. Their whole body is covered with speaker grills. There are two large amplifiers trailing behind them.
Every time a Soundful breathes, the noise is funneled into the amplifiers and comes out as a huge blast of sound. Their skin also absorbs sound, directing it through the various speaker grills on their body. They can occasionally play simple music by stomping on the ground and breathing rhythmically.
- Its name comes from "full of sound".
- The amplifiers appear to be some sort of tail. They are attached to the Soundful's lower back and cause the Soundful immense pain when cut.