The Tikis came here in the Moon thousands of years ago.
When they found the Earth already inhabited by a sentient species, they thought they would resupply the Moon and continue searching for a water world to replace their destroyed home world.
Unfortunately, their hyperdrive failed when they couldn't find helium 6 to refuel it. Apparently our solar system is utterly devoid of this particular helium isotope.
Without helium 6, their star drive is just collecting dust.
In the years since, the Tikis have been living in the Moon, making occasional trips to Earth for necessary supplies, and working on finding a solution for their star drive issues...and partying, of course.


