Classic Sonic has a unique set of skills designed to enhance his 2D platforming and momentum-based gameplay. These skills can improve his speed, defense, or ring collection. Examples include:

- Power Sneakers: Increases Classic Sonic's top speed. (1 Slot)
- Barrier: Provides a shield that absorbs one hit. (2 Slots)
- Invincibility: Grants temporary invincibility at the start of a stage. (3 Slots)
- Ring Bonus: Start a stage with 10 rings. (1 Slot)
- Speed Up: Further increases Classic Sonic's speed. (2 Slots)
- Treasure Hunter: Makes hidden items (like Red Star Rings) glow. (1 Slot)
Choosing the right skills can make a significant difference in achieving S Ranks or finding all collectibles. Consider your objective before equipping.