Sonic, Tails, Knuckles and Shadow

Sonic is a blue hedgehog, Tails is an orange fox, Knuckles is a red echidna, and Shadow is a black hedgehog with red stripes and white details.

Sonic is brave, optimistic, and loves freedom; Tails is a kind and intelligent fox, but sometimes insecure and overly sensitive. Knuckles is stubborn, loyal, and protective of the Master Emerald, with a strong character but a good heart. Shadow is serious, cold, intense, and seeks revenge, but over time he shows glimpses of a kinder personality and a strong sense of purpose.