Fenrir ( summon ) Fenrir is a recurring summoned monster in the " Final Fantasy " series . Fenrir is a wolf , often depicted with a mane and a long thick tail . Although the effects of his summon abilities vary between games , he is usually shown howling at a full moon , common imagery associated with wolves . Appearances . " Final Fantasy VI " . Fenrir is an esper that is obtained in Mobliz after defeating Humbaba for the first time there . Its summon sequence is called Howling Moon ( Moon Song in the earlier releases ) and grants Image on the party . It costs 70 MP to cast . It teaches Teleport ( x10 ) , Banish ( x5 ) and Stop ( x3 ) . At level up , it gives a boost of + 30 % to MP . In the PlayStation version , selecting Fenrir in battle will erroneously read " Fenris " . " Final Fantasy IX " . Fenrir is an eidolon summoned by Eiko Carol . It is learned through the Sapphire for 30 AP which Eiko comes equipped with when she joins . Its normal attack calls forth Titan to use the attack Terrestrial Rage , which deals Earth - Elemental damage to all opponents . If Eiko is using the Maiden Prayer , Fenrir will use the Wind - elemental ability called Millennial Decay instead . Fenrir ' s spell power is augmented by the number of Sapphires in the party ' s inventory , and summoning him costs 30 MP . If Fenrir ' s Terrestrial Rage attack is summoned on Bombs , sometimes when they use Grow , their graphic will disappear and they become invisible . " Final Fantasy XI " . Fenrir appears as one of the five terrestrial Avatar s . Associated with both the moon and prophecy , he lives in Full Moon Fountain and was said to have given the gift of magic to the Tarutaru long ago . During the Crystal War , an expert magician known as Karaha - Baruha drained Fenrir ' s energy from Full Moon Fountain , causing first the gradual loss of life on the Mindartia continent . When he summoned all of Fenrir ' s power in battle to save Windurst during a siege from the beastmen , the magical overload caused him to vanish forever , along with Fenrir . Since then , summoning magic has been forbidden by the Star Sybil . For Fenrir to take on a physical form once more , the power of the Celestial Avatars are required . Before Fenrir ' s power was stolen , it was said that he had enough strength to face even Bahamut himself . Along with Diabolos , Alexander , and Odin , Fenrir is one of the more challenging summonable avatars to acquire . The quest to acquire Fenrir , " The Moonlit Path " , requires that a summoner reacquires the whispers from the battles against Ifrit , Shiva , Ramuh , Garuda , Leviathan , and Titan . A whisper is lost once the summoner claims a reward for the Prime Avatar fights , thus requiring a rematch with all six of the required avatars in order to have access to The Moonlit Path . Fenrir is somewhat unique in that while he has higher Perpetuation Cost than Carbuncle , his cost is lower than the rest of the avatars , and thus it ' s possible for some of the best - geared Summoners to reduce the perpetuation cost to the minimum of - 1 , which is then negated to 0 by Auto Refresh . Fenrir is also the name of a server . " Final Fantasy XIV " . Fenrir is set to appear as the final boss of the Snowcloak dungeon in Patch 2 . 4 . Players can get Fenrir as a mount at the Manderville Gold Saucer in Patch 2 . 51 . " Final Fantasy Airborne Brigade " . Eiko ' s Millenial Decay summon appears in the game , featuring Fenrir . " Mobius Final Fantasy " . Fenrir appears as a wind - element ability card in " Mobius Final Fantasy " . Its ability is Shadowbind which is a ranger ability that allows a single - target wind attack that stuns . It produces four earth orbs in battle . It possesses the extra skills Breaker - Killer , Critical Retrieval and Critical Sundering . Its auto - abilities are Break Power Up + 3 % and Enhance Wind + 3 % . It can be obtained from the Ability Card Shop or through Summoning . " Final Fantasy Trading Card Game " . Fenrir from " Final Fantasy XI " has a shadow - elemental card . Fenrir from " Final Fantasy IX " appears in the trading card game with a Wind - elemental card . The cards depicting him from " Final Fantasy Explorers " are earth - elemental . " Triple Triad " . Fenrir from the series appears on " Triple Triad " cards in the version playable via the " Final Fantasy Portal App " . Non - " Final Fantasy " guest appearances . " Blood of Bahamut " . Fenrir , alongside other recurring " Final Fantasy " summons , appears as one of the giants that must be defeated in the Japan - only game " Blood of Bahamut " . There is also a stronger version of Fenrir that can be fought , called Vanargand .