Sonic is a habitual daredevil who is honest, loyal to friends, keeps his promises, and dislikes tears. He took the young Tails under his wing like a little brother when the fox was 5. With Knuckles, he shares a friendly rivalry (similar to the game one), but the two can be great teammates, though Sonic simply can't resist teasing him whenever he has the chance to. When not training, Sonic is known napping, watching television or running.
Sonic is best known for his speed, and has been shown to be one of the fastest characters in the series so far. His battle style is often used very well in conjunction with his speed. He also uses hand-to-hand combat, along with using Spin Dash and often using both in some of his attack combos. In the series, Sonic has transformed into Super Sonic. Also, he can use a Fire Flower to turn into Fire Sonic and an Ice Flower to turn into Ice Sonic. When using Supplicium's power or when getting angry, Sonic transforms into Dark Sonic.