The Pokemon themselves. The people seem to be rather normal, unless they had special powers or abilities before arriving here.

[Naoto doesn't mind Cilan, and got along well enough with Archie and AZ, but she thinks if it weren't for the Pokemon those three wouldn't be as remarkable...well, AZ is the exception there]

In the case of AZ-san it's likely. Not anyone lives for three thousand years without some sort of power.