Omega ( Final Fantasy XIII - 2 ) The Omega is a downloadable content monster from " Final Fantasy XIII - 2 " . According to the Arbiter of Time , Omega was a long - forgotten weapon of war so horrific that it was sent into another dimension . Battle . Omega starts the battle with Operation Ω , which works as a signal of its offensive . Its Flamethrower is strong enough to instantly kill weaker characters , but a well - developed Sentinel can absorb most of the missiles and lasers . Omega is immune to most things , but Dispel works . After a while , Omega will begin charging a Wave Cannon . Just after the Wave Cannon , Omega overheats and stagger s and becomes vulnerable , notably to Deprotect . When staggered it uses missile attacks . Whenever Omega ' s stagger ends , it will use Pilebunker , to launch all party members and then resume with Operation Ω , and the battle restarts from there . Omega instantly ends its stagger and uses Pilebunker when it reaches exactly at 1 / 3 of its maximum HP . At this point Omega will glow red and run around the arena dealing continuous small hits . When Omega glows red it won ' t be easy to hit using melee attacks , but the attack doesn ' t last long enough to lose the party ' s chain . During this state Omega ' s Chain Resistance lowers from 100 to 80 , and furthermore his resistances to Physical and Magical attacks change from Halved to Weakness and loses his status immunity . Omega is still capable of Wave Cannon in this phase , but it won ' t overheat , and the running rampant attacks will resume . Before it uses Wave Cannon , it will buff itself with Accelerator . Strategy . Omega attacks rapidly , so it is advised to keep a Sentinel up for most of the fight . The player can also use a buffing paradigm , like Prudent Planning ( SYN / SYN / SEN ) , or one with Serah as a Saboteur , like Premeditation . The party should be ready to switch to a Tortoise Paradigm when he charges Wave Cannon to 120 % , although he gives a brief warning just before he unleashes the attack . After Omega staggers the party should quickly swap into a healing paradigm like Combat Clinic to recover any lost HP before going all out . Omega tosses missiles out , but an offensive paradigm like Relentless Assault is recommended until it stands up again . When Omega glows red it is recommended to use Tri - disaster ( RAV / RAV / RAV ) combination to attack him with Thunder attacks . Paradigm Pack . Omega makes for a great , albeit expensive , Commando . Its basic attack is comprised of three quick lasers , its Ravage is an electric pulse that draws enemies towards it and its Blitz is a flamethrower that can devastate random encounters . When its Feral Link gauge is full , it gets a boost to all of its attributes thanks to the Feral Surge ability . It also learns Auto - Bravery late into its development . Omega ' s downsides are that it is expensive to develop and its Feral Fatigue , which inflicts status ailments on it when its Feral Link is used , and Leadenstrike , which reduces its ATB gauge recharge rate by 70 % , abilities . The former can be avoided by not using the Feral Link to keep the boosted attributes , while the latter can be counteracted by infusing ( from Yeoman lv . 1 ) and Siphon Boost II ( from Fencer lv . 18 ) , the combination of which , due to each of the three hits in Omega ' s attack activating Attack : ATB Charge II separately , allows it to recover an entire ATB segment per attack . All in all , Omega is a powerful Commando , but may not be worth the investment . Musical themes . The theme " Threat Level Omega " plays during the battle with Omega . The only other time this theme plays is in Academia - 400 AF - . Before game patch 1 . 03 was released , the Japanese version played an untitled song in the battle against Omega , which was also featured in the as a hidden song . After this patch the track was changed to " Threat Level Omega " . Other appearances . " Final Fantasy Trading Card Game " . Omega appears with a dark - elemental card . Merchandise . Omega is a secret figure in the Final Fantasy Master Creatures Kai Vol 5 series of action figures .