I sort of wondered about the lack of aliens in our main cast too, or anything close to an E.T.. Of course, extradimensional beings like gods and hell demons somewhat count as 'from somewhere that isn't Earth' but let us not touch on that.
Aliens, time travellers and espers. Only one of them are in our crew.
Technically one of my characters can time travel with the right equipment at full primordial soup power but let's not get to that anytime soon either.
So, what kind of alien race, anyways? Human-like in appearance? Typical greys? Sentient machines who follow a completely different set of rules of robotics?
I suppose I'll wait for the surprise.