Mighty the Armadillo

Mighty the Armadillo is Ray's best friend.

Ray the Flying Squirrel
Ray is Mighty's best friend.

Sonic the Hedgehog
Mighty and Sonic are close friends.

Knuckles the Echidna
Knuckles is Mighty's close friend and former teammate.

Vector the Crocodile
Vector is Mighty's former teammate.

Espio the Chameleon
Espio is Mighty's former teammate.

Charmy Bee
Charmy is Mighty's former teammate.

Miles "Tails" Prower
Mighty and Tails are friends.