Cúchulainn Cúchulainn the Impure ( in English , although the Japanese name suggests it should be pronounced , , is a creature from the world of Ivalice . Cúchulainn has appeared as both a summon of Poison and one of the Lucavi , and is always associated the sign Scorpio , the Scorpion , shown by his poisonous nature . Appearances . " Final Fantasy XII " . Cúchulainn is associated with the element of Poison , and is also referred to as the Vrishchika Ascendant , which is the Sanskrit name of its zodiac sign as used in Jyotish ( Hindu ) astrology . To strengthen his relation to the Scorpio sign , he is given an enormous tail hidden inside his body . Cúchulainn is an optional Esper found in the Garamsythe Waterway under Rabanastre , perhaps attracted by the surrounding sewage ( or the cause of it ) . Cúchulainn ' s license costs 50 LP , and he requires two Mist Charges to summon . Cúchulainn cannot receive Bubble status . In the " International Zodiac Job System " version , depending on which character his license is given , Cúchulainn unlocks new abilities for the user : Libra for the White Mage , Wither for the Uhlan , a Magick Lore augment to the Machinist , Black Magick spells Firaga , Thundaga , Blizzaga and Sleepga for the Red Battlemage , a Battle Lore augment for the Knight , the Shades of Black Technick for the Foebreaker , Stamp for the Bushi and the White Magick spells Protectga and Shellga for the Shikari . Attacks . Malaise : A non - elemental attack that functions like Drain . Blight : A non - elemental attack , and Cúchulainn ' s ultimate attack . Cúchulainn is transported to a forest . He gives a belly laugh , jumps into the air and a red tail ( stinger ) shoots out of his back and plants itself into the ground , pumping poison into the earth and damaging the enemy . Cúchulainn is the only Esper to use normal attacks instead of special attacks . He is exceptionally helpful if his summoner is to use full - effect capacity spells , as he can deal above 4 , 000 damage with normal attacks . In the " International Zodiac Job System " version , Cúchulainn gains Bio and the Null Vitality augment . Stats . Cúchulainn takes half damage from every element . " " . Cúchulainn reappears , along with the other Espers . He is the Rank 2 Melee Water summon , unlike the other " Final Fantasy XII " Espers who are Rank 3 . As a result , and in contrast with the other Espers , Cúchulainn has a small sprite and more than one can exist in the party at once . There is no condition to unlocking him , save for reaching his node on the Ring of Pacts . He keeps his signature moves Malaise and Blight , which Poison enemies . " Final Fantasy XIV " . Cuchulainn appears as the third boss of the Void Ark . " Final Fantasy Tactics " . Also known as Queklain , Cúchulainn is the first Lucavi fought and uses many powerful status attacks . Cúchulainn possessed the corrupted Cardinal Delacroix of Lionel , who further uses the Baert Trading Company to seize the Taurus stone from Besrudio Bunansa . Ramza Beoulve and Mustadio Bunansa halt the company from obtaining the auracite . Delacroix uses Princess Ovelia as a hostage to obtain the Taurus stone from Ramza and Mustadio , but they infiltrate the castle and confront Delacroix directly . He uses the stone to transform into Cúchulainn . Despite his efforts , Cúchulainn is defeated by Ramza and his forces and sealed within the stone once more . " " . Cúchulainn appears as a Scion . He can be called by anyone equipping the Tainted Cufflink when the Smash Gauge is orange . He uses Blight to damage and poison all foes . " Pictlogica Final Fantasy " . Cúchulainn appears as a boss . " Final Fantasy Airborne Brigade " . Cúchulainn appears as a boss and an EX boss . In his EX boss form he is called Cúchulainn II . This version of Cúchulainn is based off the " Final Fantasy Tactics " version . He is first introduced as an event boss in the event , " Final Fantasy Tactics - Truth is Forever Main Story " . He is found in the Deep , deep dungeon following entry into the Lionel Castle Gate . In the following event , " Final Fantasy Tactics - Truth is Forever Extra Event " , he is found within the Lionel Castle Interior . His boss attack is Biora and his EX boss attack is Bioga . " Final Fantasy Trading Card Game " . Cúchulainn appears with his " Final Fantasy XII " render and " Final Fantasy Airborne Brigade " artwork : the first , released on both series 3 and 7 , is an Aqua - elemental Summon card , the second is an Aqua - elemental character card with the Bioga ability . Etymology . It is also referred to as the Vrishchika Ascendant , which is the Sanskrit name of its zodiac sign as used in Jyotish ( Hindu ) astrology .