The Rarest Fortnite Skins Skull Trooper. The Skull Trooper skin is probably the first skin that comes to mind for a lot of people when they think of rare Fortnite skins. Galaxy. The Galaxy skin is one of the more well-known Fortnite skins. Black Knight. Renegade Raider. The Reaper. Dark Voyager. Aerial Assault Trooper. Double Helix.