Cloud's hair was originally supposed to be black and slicked back to contrast with Sephiroth's long white hair. The developers also thought it would be a good way to render less polygons on screen. The idea was eventually ditched for his iconic spiky hair. The idea was later used for Angeal, the original wielder of the Buster Sword and Sephiroph's close friend in Crisis Core.
Contributed by DidYouKnowGaming