I really don't know what Sailor Pluto has to worry about. (That would include myself, as I have been a fellow Sailor Pluto cosplayer myself.) I mean, the moon in Sailor MOON doesn't represent a planet either, and she manages just fine. Not to mention Chibi-Chibi, the Stars, and any other entity associated with non-planets. Who said that planets were the only things that mattered out there?