· Yellow Rappy - these are the normal ones, the ones that you can catch in the field. These can go wherever you can walk, basically, just faster.
· Green Rappy - these can go over all sorts of terrain, including mountains.
· Blue Rappy - these can walk in shallow (light blue) water, and rivers.
· Black Rappy - these are kind of like a blue Rappy and a green Rappy combined - they can walk over mountains and in shallow water.
· Gold Rappy - can go absolutely anywhere, even walking across the deep water. You need a gold Rappy to get to Round Island, the island where the Knights of the Round materia is.