Omega Weapon ( enemy ) Omega Weapon , is a recurring superboss in the " Final Fantasy " series . Omega Weapon ' s exact appearance varies , but it is most often a quadrupedal gray and silver entity with blue and yellow details . It is biomechanical , sometimes with gears or other robotic features on its body . In games where they appear alongside each other , Omega Weapon is almost always a palette swap of Ultima Weapon . Often , the player must first defeat Ultima Weapon to challenge Omega Weapon , and the two sometimes fight similarly . Omega Weapon ' s origins vary , if it has any origin given at all . Appearances . " Final Fantasy VI " . Omega Weapon appears in the " Advance " in the Dragons ' Den after the defeat of Kaiser Dragon . Along with Kaiser it is one of two optional superbosses , but unlike Kaiser there are no rewards for defeating it . It has very high stats and the highest HP . It regenerates when killed , and must be killed three times to defeat it . Although Omega Weapon only appears in the " Advance " remake , an enhanced version of the Ultima Weapon , called Ultima Buster , appears in Kefka ' s Tower in all versions of the game as an optional boss . " Dirge of Cerberus - Final Fantasy VII - " . Omega is the ultimate Weapon that , unlike the other Weapons designed to protect the Planet , appears when the Planet is in jeopardy to gather the Lifestream to take it and safeguard it on another world , leaving the old planet to die . It is summoned by Weiss under Hojo ' s control to take control of the Planet , and is destroyed by Vincent Valentine . " Final Fantasy VIII " . Omega Weapon is an optional superboss , marking its first appearance in the series . In Ultimecia Castle , a vortex appears in the chapel and upon ringing a bell outside the Art Gallery , players are given a time limit to rush to the vortex where Omega Weapon appears and challenge it . With a maximum HP of over a million , Omega Weapon can cause 9 , 999 damage to a party member with Light Pillar and otherwise do 9 , 998 damage to the entire party with Megiddo Flame . Defeating it earns the Proof of Omega to show the player has defeated the strongest boss . " Final Fantasy X " . For the first time , Omega Weapon is given a full backstory . A Yevon monk named Omega was branded a traitor centuries ago , and executed , his spirit still lingering in the Omega Ruins . Omega ' s hatred for Yevon grew so great that when he died he spawned Ultima Weapon , and his spirit ultimately became Omega Weapon . Omega Weapon ' s attacks are powerful , but it originally only had 99 , 999 HP ; later versions place it at 999 , 999 HP . " Final Fantasy X - 2 " . Omega Weapon has been downgraded to a regular enemy that can be encountered in the Farplane on the path to Vegnagun , and in Via Infinito . Omega Weapon ' s greatest attack is Judgement , despite it only dealing little damage . The enemy known as Almighty Shinra is supposedly Shinra possessed by Omega Weapon as a result of his attempt to replicate Farplane energies , and is a superboss in the International and HD Remaster versions . " Final Fantasy Dimensions " . Ω Weapon appears with a design similar to its appearance in " Final Fantasy VI " , while its behavior in battle is based on its counterpart in " Final Fantasy VIII " . Ω Weapon can be found in the Gladiators ' Hall , a post - game challenge area unlocked after completing the game ' s story once . The Gladiators ' Hall houses three doors , each leading to a different superboss . In addition to Ω Weapon , the player can also challenge the Adamantoise and Gigantuar . Ω Weapon guards a room , similar to the interior of Kuza Castle from " Final Fantasy V " , which houses the game ' s most powerful weapons . Each time Ω Weapon is defeated , the player can select one item from the chamber ( there are nine alcoves containing a Heroic Shield and eight legendary weapons , as well as three treasure chests containing Hermes Sandals , a Ribbon and a Megalixir , the treasure chests can be opened an unlimited number of times ) . Every two times Ω Weapon is defeated , it gains a level , gaining more stats overall , better strategy , and more attacks , becoming a more challenging opponent with each iteration . At its maximum level ( level 6 after 10 defeats ) , Ω Weapon is considered to be the most dangerous opponent . Ω Weapon fights with many dangerous attacks , many taken from other enemies . It has access to the spells Ultima , Holy , and Meteor . It also has Soul Despair , which reduces all party members ' HP to 1 , Blaster , and Dispelga , which removes all beneficial magic . It has three unique attacks : Terra Break , a long string of physical attacks aimed at random party members , Omega Break , a single - target physical attack followed by one that hits the entire party , and Light Pillar , a single - target attack that will always do 9999 damage and kill its target . " Triple Triad ( Portal App ) " . Omega Weapon from " Final Fantasy VIII " appears on a Triple Triad card . Etymology . The Weapon - type enemies are usually the strongest beasts within the games they appear , and thus Omega Weapon ' s name symbolizes it is the strongest Weapon - type enemy among them .