Renegade Shadow outfit is probably a Shadow agent because of both his name and styles. He wears a black coat with fur, no less black trousers, and, depending on the style you’re using, purple goggles or a balaclava. You can choose out of 4 styles: the default one, one with goggles, one with both goggles and a balaclava, and a Ghost style. The last one is probably just a disguise to spy on Ghost, all the other styles have Shadow’s logo on it.
High-quality images of Fortnite Renegade Shadow outfit in a PNG format with a transparent background, so that you use them as you see fit (wallpapers, YouTube, etc.):