Well the interior scouts... Mercury, Venus, moon, mars, jupiter.. chibi monn and saturn... has 14 on the first season and 17 in the last... the exterior scouts... urunus, neptune and pluto... has 19......
That's right, the Outer Scouts are older than the 'original' cast. And IMO Uranus/urinis/Amara deserves the worst tickling one could imagine for the way she treats Serena 😀