For anyone who read the most recent issue...it appears the original king of Atlantis got pissed and sank the city.
90% of the people drowned as humans would do...and the other 10% evolved.
How is that not a terrible origin? Evolution takes at the least hundreds of thousands of years. There is no X-Gene nonsense to save them.....how does that even remotely make sense?
Yes yes, suspension of disbelief its comics....but that seems to be taking it a bit too far.