Sonic is the quintessential speedster, excelling in raw velocity and offensive capabilities. He is the fastest character in the game and his Homing Attack is invaluable for chaining hits on enemies and bosses.

As Leader:
- Speed: Sonic is unmatched in ground speed, making him ideal for speedruns and quickly traversing levels.
- Homing Attack: Press B in the air near an enemy to home in on them, chaining attacks if multiple enemies are close.
- Spin Dash: Hold Down and press A or B to charge a powerful dash, breaking through obstacles and gaining instant speed.
- Light Dash: When near a trail of rings, press B to automatically dash along them.
As Partner:
- Tag Action (Sonic Boost): When activated (L button), Sonic will dash forward, carrying his leader with him. This provides a significant burst of speed, useful for clearing long gaps, breaking through certain obstacles, or quickly escaping danger. It can also damage enemies in its path.
Best Paired With: Tails (for verticality and exploration), Knuckles (for combat and breaking obstacles), Cream (for flight and extra attacks).
Sonic is a versatile character, and his speed makes him a strong choice for most levels. When paired with a partner who can provide vertical mobility, he becomes an unstoppable force, capable of reaching almost any area.