Omega Weiss (オメガヴァイス, Omega Vaisu?) is the final boss of Dirge of Cerberus -Final Fantasy VII-, fought in Chapter 12. This enemy forms when Weiss the Immaculate joins with Omega following his duel with Vincent Valentine in the Deepground headquarters below Midgar.
Professor Hojo, the former head of Shinra's Science Division, was killed by AVALANCHE, but before he died, he uploaded his mind onto the Worldwide Network. The network was fragmented during Meteorfall, locking his data away until the system was reestablished three years later by the World Regenesis Organization (WRO).
The digital Hojo scoured the world, searching for a host body strong enough to fuse with Omega. His quest led him to Weiss, the leader of Deepground. Hojo planned to use Deepground and its military resources to procure the materials necessary to summon Omega and join with it to gain ultimate power.
Using Weiss as his host, Hojo succeeded in summoning Omega, but in the final stage of his plan, he was defeated by Vincent Valentine. Nero the Sable roused his brother after Hojo's defeat, permeating him with impure energy and rendering Weiss unfit to fuse with Omega. This act also destroyed Hojo's neurodata. Nero and Weiss joined together to form Omega's core; they became "Omega Weiss."
Omega Weiss has many projectile attacks, but most of these can be shot down before they reach Vincent. If Vincent hides in an alcove on the battlefield, he can dodge most of the attacks and still keep attacking the boss. Should both of these strategies fail, the missiles can either explode upon impact near Vincent, or hover in place as mines. The mines will automatically self-destruct if the boss fires a new wave.
At a certain point, crystal shields will form in front of Omega Weiss, and Weiss will break off from Omega to directly use sword combos against Vincent. Once the shields are destroyed, Weiss will return. They can even be destroyed before he has the chance to attack. However, if they are not destroyed quickly enough, they will fire at Vincent. There is also another variant, where a ring of shields orbits around Vincent before rushing at him.
Omega Weiss may use his most powerful attack, Omega Meteor, which can deal well over 2,000 damage. This can be avoided by standing on a crystal platform at the edge of the arena. The battle may come to an end well before Omega can use this end-all attack, though a Phoenix Down should be used, just in case. Omega Weiss is invincible during this attack.
After Omega Meteor, the boss glows orange and speeds up dramatically, releasing several attacks at once. This lasts for several minutes, but if not defeated, Omega Weiss will return to his normal coloration and attack pattern, with one new addition. Occasionally, it will "reseal" itself into the top-shaped form from its introductory cutscene, fly to a different spot on the arena, and reopen. This serves no apparent function, but it does make it temporarily invincible. Eventually, the boss may repeat the Omega Meteor phase.
This battle can easily be won simply by constantly assaulting Omega Weiss with the Death Penalty, a gun usable only when playing as Chaos. Each hit from this weapon will generally deal either 1,000 or 1,500 points of damage to the boss. Hitting Weiss, who sits towards the top of the enemy, will deal a full 2,000 damage to the boss.
|Homing Projectile||90||Normal||Launches a homing attack at the target. Can be shot down.|
|Claw Swipe Combo||200, 400||Hard||A combo of two strong attacks with its claw at a close-range target.|
|Hard Slam||400||Hard||Slams its fist down upon a close-range target.|
|Weiss Sword Slash||400||Hard||Weiss breaks off from Omega to directly land a strong attack on the target.|
|Weiss Combo Attack||400, 100, 200||Hard||Weiss breaks off from Omega to launch a powerful combo on the target.|
|Crystal Cubes||100||Hard||Forms a shield, then launches its pieces at the target. Can be shot down.|
|2000||Hard||Rises out of attack range, then drops down a Meteor upon the target. Can be dodged by jumping on certain platforms in the corners of the arena.|
These attack names are derived from how the attacks themselves are described in the BradyGames strategy guide for Dirge of Cerberus -Final Fantasy VII-. Therefore, they are not necessarily the official names.
Omega (capital: Ω, lowercase: ω; Greek Ωμέγα) is the 24th and last letter of the Greek alphabet. It commonly represents the end or a limit of something, such as the concept of "alpha and omega".