Ruby Weapon Ruby Weapon is one of the two superboss es of " Final Fantasy VII " , along with the Emerald Weapon . It is one of the three Weapon enemies added in the North American , PAL , and International versions . Ruby Weapon is one of seven Weapons the Planet has produced and dispatched to cleanse any threats to its continued existence . Ruby Weapon is an optional boss that resides in the sand around the Gold Saucer on the world map . The player must defeat Ultimate Weapon and then fight one random battle afterward to trigger Ruby Weapon ' s appearance , although some players have reported Ruby Weapon not appearing at all , or that it appears but is invisible and the player can only initiate the battle by running into it by chance . The player can only approach Ruby Weapon by " Highwind " or chocobo . It can eject party members from battle , has extremely high defense , inflicts targets with status effects by its tentacles , and uses some of the strongest attacks . Defeating Ruby Weapon in the PC version re - release unlocks the Ruby Weapon achievement . Doing so in the PlayStation 4 version earns the Ruby Render trophy . The Desert Rose Ruby Weapon drops can be traded for a gold chocobo that can be used for accessing the four Materia Cave s , but its stats are poor for racing . Battle . Ruby Weapon ' s high defenses nullify most damage that is not fixed or defense - ignoring . Its Whirlsand attack removes a party member from battle , but can only be used after Ruby Weapon ' s 25th and 32nd turns , or when its tentacles are not withdrawn . The PC version has no restrictions on the use of Whirlsand and it will use it often at the start until only one character is alive or remaining . Ruby Weapon is invulnerable to everything , even def ignoring attacks or status effects until it ' s tentacles are exposed . The battle with Ruby Weapon will always start as if the party has been back - attacked . Although no back attack message will appear , the party starts with an empty ATB gauge and Ruby Weapon gets a double physical damage bonus until it is successfully attacked . Ruby Weapon will not expose its tentacles unless only a single character is alive , but is immune to all damage and status effects until that point . This is an inbuilt ability and not based on its high defense ; regardless of how strong a character ' s attack is , it will always do 0 damage . No status ailments can take effect on Ruby Weapon until its tentacles are exposed , including the paralyze effect from Dazers or Hades . After its immunity wears off , paralysis from these sources works , which can keep Ruby Weapon from attacking for a few turns . When the tentacles are present , Ruby Weapon attacks using percent based HP attacks that are not affected by gravity resistance and / or MP - draining tentacle attacks , and casts Ruby Ray and Ruby Flame . Ruby Flame is Fire - elemental and deals roughly 2000 damage , while Ruby Ray deals roughly 3000 damage . Shadow Flare is used for over 5000 damage to a single character . Ruby Weapon uses Ultima , as both regular attacks and counterattacks to Knights of Round . Ruby Weapon uses physical attacks and Comet2 if its tentacles are removed , but can no longer use Gravity attacks or damage MP . It can create two new tentacles when they are destroyed . The tentacles cannot kill a character because they deal Gravity - based damage , but they inflict the characters with status ailments . Ruby Weapon only places its tentacles into the ground when a single character is alive or remaining . They appear behind the party and prevent escape . While they are part of Ruby Weapon , they have separate HP pools and can be destroyed . They are susceptible to Poison while Ruby Weapon is not . Ruby Weapon can recreate the tentacles infinitely , and destroying both tentacles will allow it to use Whirlsand if the player has more than one character alive at the time . The left tentacle uses two MP draining attacks , one that drains roughly 15 / 32 MP and another that drains roughly 25 / 32 MP . Both attacks inflict Poison and Slow - Numb ( 30 second countdown to petrification ) . The right tentacle uses two HP damaging attacks : one that deals roughly 15 / 32 of the target ' s current HP , and one that deals roughly 30 / 32 of the target ' s current HP . Although they deal damage based on the target ' s current HP , they are not Gravity - based , and thus cannot be mitigated with Materia set - ups . None of the tentacle attacks are affected by the Shield or Sadness statuses or front / back rows . Strategies . It is advisable to open the battle with only a single character alive and cast Life2 linked to an All Materia , or the Phoenix summon . Reflect can be helpful to deflect Ruby Weapon ' s Shadow Flare . As Ruby Weapon counters normal attacks and Knights of the Round with Ultima , it is important to only summon them if Ruby Weapon is paralyzed ( achieved by using Hades or the Dazers item ) . A Fire Armlet can be equipped to all party members to drain Ruby Weapon ' s fire attacks . Another benefit of using Fire Armlet instead of a Fire Ring is that not being an accessory , the player can also equip all three party members with a Ribbon to prevent the status ailments that come from Ruby Weapon ' s tentacles . It is advisable not to destroy the tentacles , as it will accelerate the casting of Whirlsand . One - man summon rush . This strategy requires Knights of Round , Hades , W - Summon , Mime and HP - Absorb and can be done at a relatively low level ( with HP bolstered by HP Plus Materia ) and fresh Materia without any AP can be used . One should equip one character with all of these , linking Knights of the Round to HP - Absorb . The other party members should be KO when entering the battle . The character should W - Summon Knights of the Round , then Hades . Knights of the Round will deal damage and Hades will inflict Paralysis . The HP - Absorb linked on Knights of the Round will fully restore the character ' s health . The player can use Mime to attack again indefinitely . After the second or third time , the player should wait for Ruby Weapon to begin to move again to properly re - inflict the Paralysis status . If the player has two stars on the Knights of the Round Materia ( or they have Master Summon from defeating Emerald Weapon ) , they can do a new summon as the last move with Phoenix first and Knights of the Round second , with Phoenix reviving the party to let everyone get EXP and AP , while the Knights of the Round kills Ruby Weapon right after . However , the timing must be precise . The Materia used in the battle can gain massive AP growth if linked to the proper weapons and armor . Dazers . This strategy requires the W - Item Materia and the item Dazers . Using the W - Item duplication bug on the Dazers and Megalixirs earns free copies of them ; about 20 of each is enough . The character with the W - Item should use a Dazers on Ruby Weapon every turn , then use a Megalixir on the party . The other two characters can kill Ruby Weapon using regular attacks . This strategy doesn ' t require a Knights of the Round summon , Mime Materia or level 99 characters , nor killing anyone off before the battle . It is possible to kill Ruby Weapon with all three characters using double or triple AP weapons and armor to get a good AP boost . All Lucky 7s . This strategy uses the All Lucky 7s status to defeat Ruby Weapon . The player should start the battle with a character ready to use a Limit Break with 7677 HP , and having the two other party members knocked out . The player should start off the battle by targeting the tentacles with a powerful Limit , such as Omnislash , and Ruby Weapon will retreat its tentacles . Using a Potion to get the character ' s HP up to 7777 will activate All Lucky 7s , which will deliver 64 blows to Ruby Weapon , each blow dealing 7777 damage , totaling 497 , 728 damage ( about 62 % of Ruby Weapon ' s total HP ) . Once the character has snapped out of their Lucky 7 ' s , all one has to do is use Comet2 with W - Magic on Ruby Weapon and its tentacles ; whenever it " sprouts " its tentacles , the player should use Comet2 twice on the tentacles , and whenever Ruby Weapon retreats them , one should use Comet2 twice directly on Ruby Weapon . The battle should take about ten minutes and the player should not receive any damage . Ruby Weapon can be defeated with the use of Dazers and the ? ? ? ? Enemy Skill . The player should equip the characters with Enemy Skill Materia , Ribbon accessories , and Mystile or Ziedrich armors . It is helpful to have high Luck and Dexterity . The player should move Dazers , Phoenix Down , and Turbo Ether to the top of the item list and it doesn ' t hurt to equip Final Attack with Revive / Phoenix , but with any luck it won ' t be needed . One can also use W - Item or Mime , but neither are necessary . For Dazers , 25 is enough if one is efficient , but more can be stocked to be safe . The player should begin the battle with two characters dead and one character with low HP . Ruby Weapon will plant its tentacles and the player should ignore them entirely . The tentacles cannot kill a character because they deal fractional damage . Once the tentacles emerge , the player should throw Dazers at Ruby Weapon , then begin reviving the others . One does not want to bring anyone to full HP , but rather keep their HP low for the ? ? ? ? Enemy Skill to be effective . The party should begin attacking Ruby Weapon with ? ? ? ? , but use Dazers when the Paralyzed status wears off . Once all characters are revived , the player can cast Big Guard or Haste to allow for twice as many attacks for each Dazers item thrown at Ruby Weapon . The key to this strategy is timing : if one throws Dazers at Ruby Weapon while it is in the Paralyzed status , the Dazers will miss . Sometimes Dazers will miss and immediately thereafter Ruby Weapon will become active and attack . The trick is to know how many character turns one is allowed before Paralysis wears off , and to hit Ruby Weapon with Dazers as soon as it happens . Generally one can hit Ruby Weapon four - five times per Dazers throw if the characters have Haste and high Dexterity . Much of the time the player can deny Ruby Weapon a chance to attack , but other times Ruby Weapon and the tentacles will get in a turn while the Dazers are queued . If someone dies from a main body attack they should be revived only after throwing Dazers . The only real concern with this method is that Ruby Weapon will wipe out the party with Ultima , but it tends to miss when Luck and Dexterity stats are high and Mystiles are equipped , as does Shadow Flare . Limit Breaks . The player can kill Ruby Weapon using powerful Limit Breaks if they use Hero Drink items on the attacker . Good Limit Breaks to use are the attacks that hit multiple times , such as Cloud ' s Omnislash , Cid ' s Highwind and Barret ' s Angermax . Gil attack . The player can use three mastered Throw Materia or three Master Command Materia to use gil to damage Ruby Weapon . Throwing gil ignores defense and will always inflict 9999 damage to Ruby Weapon if one throws at least 100 , 000 gil at Ruby Weapon . " See here for gil earning methods . " The player should enter the battle with two members of the party dead to stop Ruby Weapon from using Whirlsand , and before the battle use the W - Item duplication glitch to get a stock of Elixirs and Hero Drinks . The main character should use an Elixir and a Hero Drink every turn they get , and once their Limit Break activates use it . Because of Hero Drinks the character can deal good damage even with Ruby Weapon ' s enhanced defense . To fill the Limit Break gauge faster the player can use the Fury status . The character must equip the Ribbon to protect against status effects . If the player has spent a tremendous amount of time at the Northern Cave , especially to get at least two copies of each Master Materia , they will have more than enough gil to make use of this method . Glitch . There is a glitch that makes the battle not end even after Ruby Weapon is defeated . In this situation the only way to get out is to escape . To make the glitch happen the player must kill both of Ruby Weapon ' s tentacles once , so that Ruby Weapon will remove them . Once Ruby Weapon puts the tentacles back the player must kill only one of the tentacles . Even if the second one is still alive , Ruby Weapon will remove both . After Ruby Weapon has pulled the tentacles away the player must kill Ruby Weapon itself , triggering the glitch . The battle isn ' t over because one tentacle is still alive , even if there is nobody for the party to fight . After escaping the battle Ruby Weapon has disappeared from the world map . Merchandise . Ruby Weapon appears as a figurine in the Final Fantasy Creatures Vol 4 series that came out in 2004 . The Final Fantasy Creatures collection figurines require minimal assembly and there are three types of every character : full - color , crystal , and chrome .