The Neo line spans through 7 parts and 2 extensions. Each part, apart from series 6, has new improved versions of figures from the original series. The improvements are really remarkable for the ones originally issued in series 1 and 2 (more robust, more faithful to the manga counterpart, more detailed), but less noticeable for the ones from original series 3 and 4. It's comprised of 17 distinct characters, with Nami having 2 versions, for a total of 18 distinct figures.