Mio

Lady Mio is a metaphysical girl seeming to be made of pure light, that appears at the end of Final Fantasy: Crystal Chronicles. Its existence is tied to that of the Meteor Parasite in Mount Vellenge. The player meets her first time after the battle against the Meteor Parasite. Once defeated, the Meteor Parasite withers and lays weakly on the ground, waiting for someone to finish it off. Before the player(s) can administer the coup de grace, however, a disembodied voice commands that they stop and sucks them through a extreme crude white light into the crystal chalice, depositing them in a bizarre, seemingly underwater world known as the Nest of Memories. This event is probably caused by Raem, the main antagonist of the game.

Once there, the history and nature of Raem is revealed by Lady Mio, as is the fact that both Leon and Hurdy were victims of the being's insatiable appetite for painful memories; however, he was dissatisfied with them, as they spent all their time looking ahead and giving little thought to the past. While this information is being related, a series of randomly-determined questions pertaining to the players' journey must be answered in order to progress. An incorrect response will cause the player to lose a memory, and will summon a pair of Raem's cruel Minions; the game is over if the player's memory total is reduced to 10 or less.

History
Most of Lady Mio's history is unclear, and the girls very existence is never revealed--or even mentioned--to the player until the end of the game. What is known is that Mio was born, along with Raem, from the meteor impact that destroyed the great crystal and gave rise to the miasma which was produced since then by the Meteor Parasite. Both entities are apparently dependent on the memories of living beings for sustenance; however, their individual palettes diverge quite significantly. Mio desires simply to "nibble on memories from time to time", leading to forgetfulness, while Raem consumes all the memories which he perceives, thereby eradicating all coherent thought and recollection.

The Conflict
Once all the questions are answered, Lady Mio opens a door, through which the player gets into a new area, seeming to be a force field high upon the Nest of Memories. Misleadingly this area can be missunderstood as an area in the space high above the real world. In this moment Raem descends from on high. He and Mio begin a discussion of the whys- and why-nots of consuming memories. As soon as Mio shatters the force field to rescue the player of the avaricious Raem, however, this facade quickly drops to reveal a brutal thug, using his immense power to pin her to the floor. Thus begins the final battle against Raem.

Once defeated, Raem refuses to surrender, apparently afraid of fading away (that is, ceasing to exist). In a desperate attempt to preserve his own existence, Raem uses his powers to both possess and merge with Lady Mio, creating a crystalline, insectoid horror known as Memiroa or just Mio-Raem (Memiroa is an anagram of "Mio" and "Raem").

Once Memiroa is defeated, too, it dismembers into thousands of sherds anda voice tells the player, that they (Mio and Raem) will sleep now for a while. Then the player is teleported back into the cave of the Meteo Parasite, which needs one final hit to kill it. After this, the end sequence of the game starts. In this, a huge light beam burns a hole into the cover above the now dead Meteo Parasite whose body elapses now. The beam rises higher than every mountain is, and the Miasma all over the world disappears and all the monsters, too. (This is not definately said, but very probably.)