Behemoth King ( Final Fantasy XII ) The Behemoth King is an Elite Mark from " Final Fantasy XII " . The hunt becomes available after the marks up to Fafnir have been vanquished . Behemoth King can be found in the Edge of Reason area of the Feywood . Although it is a behemoth , its body is wyrm - like , resembling Fafnir . Behemoth King is fought in the " International Zodiac Job System " Trial Mode at stage 90 . Finding Behemoth King . This mark can be tedious to spawn , since all of the monsters in Ice Field of Clearsight , and the Giruveganus in Edge of Reason , must be cleared , including respawn ( ed ) enemies . The quickest way of doing this is by killing the Giruveganus enemy in the Edge of Reason section first , then returning and killing the 29 enemies in the Ice Field of Clearsight and Behemoth King will spawn in place of the Giruveganus . The player does not need to kill any other enemies in Edge of Reason apart from Giruveganus , or spawn the Mandragoras , to fight Behemoth King . Battle . The Behemoth King begins the battle by pounding the party with elemental spells , including Ardor . When the Behemoth King ' s health reaches a certain point , he will either throw up a Magick Wall or a Anti - Magick . Depending on which , he will either become immune to spells or physicals . One can trigger the changing of his immunity by casting Arise on him twice . If Behemoth King becomes immune to spells , he will begin using his powerful physicals and White Breath , which damages the party and can inflict Stop . If he becomes immune to physical damage , the King will pummel the party with elemental spells . Eventually either the Shield or Anti - Magick will fall , but the Behemoth King will quickly erect the barrier of the opposite type - when the Anti - Magick falls he uses Magick Wall , and vice versa , effectively alternating his immunity at a regular basis . When Behemoth King ' s HP drops below 10 % , he will use Growing Threat , doubling his level . Strategy . One strategy is to cast a Reverse / Decoy on one character and use the tanking teammates to pound him . A good tactic would be to use a Masamune + Genji Gloves combo . During his spell immune phase , the player will be hard - pressed to heal , as the Behemoth ' s Kings physical blows can do several thousand damage even with Protect in effect , but the player can conversely do great damage with their strong weapons . During his physical immune phase , his various elemental spells can be guarded against with the right equipment , and the player should use the spell Shock for offense , as Shock animates quickly and still does a lot of damage . After Behemoth King uses Growing Threat a Quickening chain , if the player can do one long enough , can kill him quickly at this point . The key for most of the battle is paying attention to the Behemoth King ' s attacks and quickly altering equipment to lessen his blows , and to make sure to switch between spells and physicals for damage when he becomes immune to either . Rewards . While that may not seem like much at first , on Mt Bur - Omisace the player can find a rock shaped like a wyrm ' s head near Relj . The player must unequip any weapons from Vaan and hit the rock to obtain the full reward for the hunt . Defeating Behemoth King adds him to the Sky Pirate ' s Den and grants the player the title Lord of the Kings . Other appearances . " Pictlogica Final Fantasy " . Behemoth King from " Final Fantasy XII " appears in " Pictlogica Final Fantasy " as an enemy .