Most Eidolons on Crystallis have gone quiet in the wake of the Calamity's defeat and following the creation of Vaikuntha. While they can still be summoned, it is unclear whether they are still intelligent beings or simply shadows of what the Eidolons used to be.

The Knights of the Round are an exception to this and while no one has summoned them since the final battles, it is possible to convene with them and enlist their help, granted one find the right place and right way to do it.