Sonic the Hedgehog, the fastest thing alive, is known for his incredible speed and agility. His primary offensive move is the Homing Attack, performed by pressing the jump button again in mid-air near an enemy. This allows him to chain attacks, maintain momentum, and reach otherwise inaccessible platforms. His Spin Dash (down + B) is perfect for quickly building speed from a standstill or breaking through certain destructible blocks. Sonic's Boost Gauge fills rapidly, and his Boost (X/Y) propels him forward at blinding speeds, destroying most enemies and obstacles in his path.
When playing as Sonic, focus on maintaining a high speed. Use the Spin Dash to get going, then chain Homing Attacks to keep your momentum through enemy groups. His Boost is excellent for clearing long stretches of track or powering through difficult sections. Sonic excels at horizontal speed and quick, precise aerial maneuvers. His playstyle is all about flow and maintaining that 'rush' feeling. Practice his Homing Attack timing to maximize its effectiveness and keep your Boost Gauge topped up.