|This article's subject exists primarily or exclusively within the Sonic Underground continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
The Sonia Spin is a cyclone-like attack. When performing it, Sonia spins on her feet at a rapid rate, spinning so fast that she becomes nothing more than a pink-hued tornado. With this, she is able to knock away enemies and break materials. This attack is more or less Sonia’s equivalent to Sonic's Sonic Super Spin.
- In "The Big Melt," Sonic and Manic are shown joining their force to do a huge version of the Sonia Spin, a move that Sonic and Sonia were shown doing together before. However, as Manic does not have any physical superpower, he normally cannot perform this move.