Of the gregarious hordes of mimics, the Queen alone possesses the ability to reproduce. Her egg-laying capabilities being truly astounding, she has been known to lay over 100 eggs in a single day. The eggs, already quickened within their mother, hatch with little delay into the creatures known as "tiny batteries," creating a veritable army overnight. Such is a day in the life of the Queen, and she will have very many of them, for Queens can remain fertile for several hundreds of years.
Mimic Queen begins with four Tiny Batteries and spawns new ones throughout the battle. The player should ignore the Tiny Batteries and concentrate on the Mimic Queen. As her spawn, she is weak to Ice, so Blizzard should be cast against her. The player is advised to stick to Potions and Hi-Potions for healing so as to conserve MP for Blizzard.
The Queen's cinematic attack, Shockstorm, does upwards of 150 damage to the entire party, so the player should keep their health up during the battle to avoid being KO'd. A long Quickening chain can do heavy damage to the queen, knocking off half her HP or more instantly, but this can be a poor way to begin the battle as it drains the party's MP. Thus, the player may wish to keep a party member's MP at max until the queen is weak, then use a Quickening chain to finish her off quickly.
According to the story from the Urutan-Yensabestiary entry, the Mimic Queen was created the same way as Omega Mark XII, and its creator made it to show his disagreement with his Patron, and led it into his Palace's cellars.
When the player reports the Queen's death to Montblanc, they receive a letter of thanks for proving that a girl's father was innocent; this father probably being the Patron, accused of creating and/or releasing the Mimic Queen.
The battle against the Mimic Queen is much simpler as the player doesn't need to concern themselves with the Tiny Batteries. Watch out for Ground Shaker and Shockstorm as these are her most powerful abilities, meaning the player should focus on resistance with shell and mage focused equipment. Another option, is to use Berserk on her, rendering her unable to use her magic attack, following with slow and protect to reduce damage taken. Since her battle isn't much difficult, the player should easily be able emerge victorious.
Mimic Queen appears in the Final Fantasy XII manga. Vaan distracts the Mimic Queen while Basch cleaves it in two, but they disturb a nest of smaller Mimics. Basch fights them off to protect Vaan, the two discussing Reks's belief in Basch and the true events of Raminas's death during the battle.