Pluto was considered to be a planet until 2006, when it was renamed a planetoid. There is also rumer going aroudn that Pluto's english name is going to be Charon, one of Pluto's moon. Eitherway this may be appropriate, as though he is considered to be a Commander he doesn't act like one but more like the lead scientist (This is further proved that he then takes over Team Galactic after Cyrus decides to stay in the Distorted World in Platinum). So therefore, his role is a bit different then the Commander's and shouldn't be placed on the same name level as them.

I thought that things like this could not be mentioned, even if it is in a spoiler?