Knuckles

He is a red echidna who is distinguished by his strength and his serious and determined attitude. Knuckles has a protective personality and is known for his sense of responsibility, as he is the guardian of the Master Emerald, a powerful gem that keeps Angel Island, his floating home, in balance.

Physically, Knuckles has long, backward-protruding spikes, a sturdy build, and gauntlets with two large spikes that he uses for climbing and defense. He is incredibly strong, skilled in hand-to-hand combat, and has the ability to glide short distances by using his spikes to catch the wind. Though loyal and kind-hearted, he can sometimes be a bit naive, making him vulnerable to being tricked. Throughout the series, he is an ally of Sonic, the fast, blue hedgehog, though he initially started out as his rival due to misunderstandings.

It measures 110 cm, its fur is red and its chest white, its eyes are large and purple.

He is lonely, reserved and distrustful, so he does not know how to express himself well, and most of the time he is half angry, he has no friends.