So since we know that Aurelion Sol has visited other planets.
That means Runeterra isn't alone in their universe.
And aliens exist.
Imagine if we got an alien champion.
That means Runeterra isn't alone in their universe.
And aliens exist.
Imagine if we got an alien champion.

Not only is Malzahar not Voidborn, the Void is less of an alien planet than it is an entirely different plane of existence.
Wait... Bard and Soraka are aliens. Diana WORSHIPS the moon, and thus... aliens. The void is basically the planet from Starship Troopers. Vel'Koz LITERALLY abducts people and probes them... to death.
WTF
As people have proven you wrong in the comments, there were aliens previously mentioned within the LoL universe.
Maybe...Yordles?
Well it was implied they were in the JoJ with that stupid rocket ship, but given gnar's origins I'm fairly certain they're Runeterran native.
Sorry folks if you like the Mothership, but I despise the sodding thing. Just like I despise the sodding cactus.
Would you consider
or
aliens? Since from what I last read,they weren't from Runeterra.
They did say "world far away", but that means little considering their origin story uses the currently redacted summoner lore.
What if what happens on Runeterra is actually millions of years into our future? What if humans have spread through out the universe like cockroaches, and then one day they find out that there is life on Runeterra? What if we get an Earthling champion that wants to colonize the planet,so he could build a chain of McDonald's and monopolize the fast food business on this side of the galaxy?