Ou

From FFXI Wiki
General Notes
  • In order for Ou to be accessible on the last floor, all 5 Omen Boss bead key items must be possessed by the party/alliance leader who initiates the Omen run via the Earthly Concrescence in Reisenjima.
    • Prior to warping to Ou's floor, you will need to kill all monsters on the circular map (Approximately 55+ mobs) before entry will be granted. The floor objective has no bearing on entry.
    • Players who have a full KI bead set will receive the message "The light begins to waver" in their chat log as soon as the last monster has been defeated, and a new option at the portal will become available "Head toward Ou".
  • All participants in the battle with Ou will lose their Omen Boss beads.
  • Starts the fight off with an invisible HP bar.
  • Casts single target Elemental Magic tier V and -ga tier IV based on the current game day.
    • Enfeebling magic will be cast regardless of the day.

Uses the following:

  • All standard Caturae TP moves.
  • 95%: Uses Fu's Ebullient Nullification - Dispels/absorbs all buffs within 20'
  • 75%: Uses Kyou's Unfaltering Bravado - Conal 10,000 damage split among the targets, which cannot be mitigated by any form of DT gear.
  • 65%: Uses Chainspell
  • 60%: Uses Kei's Dancing Fullers - Inflicts 2500 AoE damage (10') for each person in range, including Luopans.
  • 55%: Ou levels up and its HP bar becomes visible for a brief period of time before becoming hidden again.
    • Ou will also begin using higher tier magic spells. Switching from single target to higher tier AoEs.
  • 45%: Uses Gin's Zero Hour - AoE magic-based throat stab, hate reset, and inflicts 60 second Inhibit TP.
  • 30%: Uses Kin's Target - Causes Ou's eyes to light up and enables the following attack:
    • Eleventh Dimension - Inflicts a 3:00 duration Terror effect on the player Target was performed on.
      • Shifting hate from the player that had Target initiated on will disable this move and Target.
      • Ou will have access to Interference from this point onwards.
  • 15%: Gardez- AoE terror (20') for 3-10 seconds.
    • This may be entirely resisted with sufficient magic evasion.
  • ≤10%: Prophylaxis - Immediately recovers its HP to 22% then will recover to 100% HP after 30 seconds has gone by.
  • This is a move unique to Ou and it must be defeated within the next 30 seconds otherwise it will fully recover all HP essentially restarting the fight from the beginning.
  • It is possible to kill Ou before it has a chance to use this if you damage it fast enough before it may be used.
  • All previously used abilities are once again usable by Ou if Prophylaxis is used.

Ou
Ou.jpg
Adversary
Type Arcana
Family Caturae
Job Warlock's Chapeau icon.png Red Mage
Sub Job Fighter's Mask icon.png Warrior
Class Omen NM
Resistances
Physical Damage Magical Damage Breath Damage Slashing Blunt H2H Piercing Ranged
100% 87.5% Question 100% 100% 100% 100% 100%
Element: Fire Element: Wind Element: Thunder Element: Light Element: Ice Element: Earth Element: Water Element: Dark
70% 70% 70% 100% 50% 50% 50% 20%
A: Absorbs · S: Susceptible · R: Resists
100% denotates that a monster takes full damage.
Tiers of 50% or less guarantee a spell resist.


Listings

Listings by Zone
Zone
  Reisenjima Henge
FFXIDB Icon v3.png

     Battlefield: Omen
     Possess: Fu's, Kyou's, Kei's, Gin's, Kin's beads
Level Behavior
139 This monster is aggressive. True Sight
HP MP DEF EVA M.DEF
~1,400,000 CheckCheck 200
Title
Ou Obliterator
Rewards
Abilities Spells
100-1%:
Deathly Diminuendo
Diabolic Claw
Hellish Crescendo
Malign Invocation
Stygian Sphere
Stygian Cyclone
95%:
Ebullient Nullification
75%:
Unfaltering Bravado
65%:
Chainspell
60%:
Dancing Fullers
45%:
Zero Hour
30%:
Target
30->16%:
Eleventh Dimension
≤30%:
Interference
15%:
Gardez
10%:
Prophylaxis
Regardless of Day:
<55% Singles Become AoE
Addle
Diaga
Diaga III
Dispel
Dispelga
Stun
Slowga
Based on Day:
Element: FireElement: EarthElement: WaterElement: WindElement: IceElement: Thunder:
Elemental Tier V (>55%)
Elemental -ga Tier IV (<55%)
Darksday:
Impact (>55%)
Meteor (<55%)
Lightsday:
Holy


Omen Navigation
Glassy NMs

Glassy Craver

Glassy Gorger

Glassy Thinker

Caturae NMs

Fu

Kyou

Kei

Gin

Kin

Ou

Omen Rewards

Trivia

  • It was revealed during the 20th Vanaversary live stream that Ou's move "Prophylaxis" is a Jojo Reference. It is a tribute to Killer Queen's ability "Bites the Dust" (負けて死ね). In which the target is killed and a time loop back is caused back to a moment prior to the detonation.