Who is the orange sonic?

The "orange Sonic" refers to Knuckles the Echidna, a character from the Sonic the Hedgehog video game series. While Sonic himself is blue, Knuckles is often depicted with red fur and has an orange hue in certain adaptations. He is known for his strength, guardianship of the Master Emerald, and rivalry with Sonic. Knuckles has become a popular character in the franchise, often appearing alongside Sonic and his friends.