The red Sonik is called Knuckles the Echidna.

Knuckles the Echidna (Knuckles the Echidna, ナックルズザェキドナナナ, Nakkurusu za Ekiduna) is the sonic the hedgehog produced by Sega.

Knuckles the Echidna lives in an island floating in the air-"Angel Island". I don't know why, Nak has been guarding an emerald named King Emerald. That's the only energy gem that can control the chaotic jade runaway. Knuckles the Echidna's fate is to protect the king's jade.

Knuckles the Echidna is Sonik's rival and quarrelsome friend. If Sonik is a "wind", then it is a "mountain" that will only stay in one place. Although his character looks serious, there is also a gullible side. He is also a treasure hunter and a martial arts master. Knuckles the Echidna has great strength, and the thorn in his fist can crush stones. He also has other special abilities, such as gliding and climbing.

Role setting:

Knuckles the Echidna first appeared in the game Sonik the Hedgehog 3 on the MD console, and his birthday is the release date of the game in North America on February 2. The design was originally intended as Sonik's rival, but it was later changed to "Fighting Buddies". The original character was set at the age of 15, but it was later changed to 16 in The Adventures of Sonic, that is, the same age as Sonik.

The previous design draft shows that Takashi Tomita tried to dress Knuckles the Echidna in Jamaican-style clothes, but this design was rejected. This trace can still be found in the current design, including the color of his whole body is the national flag of Jamaica. And the shape of his mane simply comes from the NIKE sports trademark.