Shouldn’t that be Hermetian? From the deity Hermes / Mercury.
And those who live on the moon are called Clangers. 
This is all nonsense. We Bolrack have the correct interpretation
Nonrit – nonriti
Rlorgus – Rloretta
Klrack – Racklo (“Slime” is accept in informal contexts).
Bol – Bolrak
Potik – Portrzebie
Veeble – Fetzers
Hoar – Kriolmunchers
Jutrick – Vetti
Qink – Qinki
Europains? Europians? Europans? Europanites? 2010ers?
Jupitorians. Damn fine people I hear.
Speak for yourselves, but I consider myself a Milky Way Galaxian. Milky Wayer?
I thought you find Klingons on Uranus.
.
People from Mercury are called Freddies.
I’m preferential to Vulcans, myself.
And for a time it appeared possible that there might actually be Vulcans in our own solar system:
Citizens of the Free Lunar Republic call themselves Loonies, or so sayth Heinlein.
People from the kingdom of Id are Idiots???
Colloquially know as idioms.
These responses are immoral and racist. We must use the native terms of inhabitants of those planets themselves, in the interest of political correctness. E.g., it is possible that inhabitants of Mars call us (translated from the Martian) Assholians.
Uranasians?
Plutocrats!
If Pluto is made of something rare and expensive, that is.
Winner!!
Of course the residents of Mars, have a completely different name for the rock they live on, as well as the one we live on. The same goes for al the other rocks in orbit around this sun (which they have a different name for as well)
Will take much to straighten this all out in the future
Sol–>Extra-Crispians
The Mysterons prefer to use Earthmen.
And at least one science fiction reality has the inhabitants of other planets in the Solar System as visitors only, so Martians are… more correctly elsewhere-ians until further clarification is received.
Wouldn’t “Earthlings” be more gender-neutral? Also, I’ve always seen it (from Those Who Know) that the first thing they say is “Earthlings, take me to your leader.”