Who is the red sonic character?

You're likely thinking of Super Sonic, who is the super form of Sonic the Hedgehog. While not strictly "red," Super Sonic has a golden-yellow hue, but his iconic look often involves a red aura.

Here's a breakdown of his key features:

* Golden Yellow Fur: Super Sonic's fur turns from blue to a bright golden yellow.

* Red Aura: He's surrounded by a powerful, red aura that shines brightly.

* Red Eye Color: His normally blue eyes become crimson red.

* Increased Power: Super Sonic possesses immense power, allowing him to perform incredible feats of strength and speed.

Super Sonic is one of the most iconic and popular forms of Sonic the Hedgehog. He is often seen as a symbol of hope and power in the Sonic universe.

If you're thinking of a different "red" Sonic character, please provide more details so I can give you a better answer.