The Chaos Emeralds in Sonic Spar enables the ability to bust through any kind of wall without upgrading (however you need rings still). Finding all Chaos Emeralds and having 50 rings enables the ability to turn into their Super forms. They lose rings when they are in that form and when it reaches 0, they will revert back into their normal form. In combat, the character can perform a special move that is stronger and deals more damage, however it wastes some of their health.

In Story Mode

The Green Emerald is found after going through a fake rocky wall in Emerald Beach. It can be used to bust through rocky walls.

With the Yellow and Violet emerald, you can break more rocky walls at once.