Mimic ( enemy ) Mimics are an enemy in the later section of games in the " Final Fantasy " series . They take the appearance of treasure chests or other objects and once triggered , burst out as an enemy . Mimics are a replacement of Monsters - in - boxes which contained monsters instead of usual items . Appearances . " Final Fantasy IX " . The Mimic appears disguised as a treasure - chest in " Final Fantasy IX " . One of its abilities is " Call " , which will summon the Magic Vice enemy into battle . The Mimic can call more if the last one was defeated . They can be found in the mansion of Burmecia impersonating treasure chests . " Final Fantasy X " . The Mimic appears as a normal treasure chest in battle in " Final Fantasy X " . If the steal command is used , the message " Nothing to steal " will appear and it will transform into the fiend , which is rather difficult to kill . While in its treasure chest form , attacking it will kill it as it has very low HP in this form . But the player does not know if it is a real chest or a mimic . However , if the player uses Mug instead of Steal , the Mimic can be killed while still in its weak chest form . Or take whatever treasure may be inside if it is a real chest . They can only be fought within the Omega Ruins and there are four different types . " Final Fantasy XI " . There are several different ways to encounter Mimics in " Final Fantasy XI " . The first is to be a thief and to unsuccessfully pick a lock . If a lock is failed to be picked , the chest will transform into a Mimic . In Pso ' Xja they can be encountered as normal enemies and they are available in some Aht Urghan mercenary Assault Missions or to venture into a certain Burning Circle Notorious Monster fight where it is required that you fight a mimic . " Final Fantasy XII " . Some Urns may happen to be Mimics and attack the party in " Final Fantasy XII " . They are first found at the Barheim Passage , and are usually found in underground or indoor areas , such as the Henne Mines and the Lhusu Mines . They are usually a slightly different color to the normal treasure Urns , and can be quickly identified as monsters . " " . The Mimics appear as normal treasure chests until a group leader tries to open it in " " . Its basic command is a weak physical attack which makes it less threatening than previous appearances . " Final Fantasy XIV " . Mimics appear in the Lost City of Amdapor as a potential hazard ; players must choose the correct box at two points to avoid being attacked . Several " Treasure Coffers " appear in Hullbreaker Isle that are Mimics , however some of these must be slain to obtain Stone Tablets needed to open a door to the second boss . A diminutive Mimic called " Treasure Box " can be obtained as a minion by purchasing from Hunt Billmasters . Mimics are sometimes summoned by Judges in Clan Trials , and retain their status of Monster in a Box . " Final Fantasy Adventure " . The Mimic is an enemy found within the Cara Mountain Range , Cave of Medusa , Gaia Pass , Glaive Castle , and Old Mine . They have a chance of inflicting Dark per hit . " Vagrant Story " . Mimics appear as normal treasure chests in " Vagrant Story " . They appear as insect - like creatures that appear from under the chest unlike other Mimics appearing in Ivalice . " Final Fantasy Crystal Chronicles " . Mimics are encountered in Rebena Te Ra for all cycles . Like all mimics in the series , they appear as harmless chests until they feel threatened and turn into very aggressive monsters . Mimics take on the appearance of regular brown treasure chests , until they reveal their single eye and purple claws when approached . Other appearances . The is , if not an official appearance , a very strong reference to the Mimic . It disguises itself as a chest and will attack the player should any attempt to open it be made . In the " Final Mix " version , a palette swap called appears .