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General Notes
  • Throughout the entire fight:
    • Will not absorb damage during the use of Slaverous Gale, Disgorge, and Dustvoid.
    • Will absorb damage during the use of Aeolian Void, Gorge, and Psyche Suction.
    • Casts spells roughly every 30-35 seconds.
  • Above 50% HP:
    • Absorbs damage during TP moves.
  • Below 50% HP:
    • Absorbs damage during TP moves and spellcasting
    • Now switches between modes while casting spells
      • Casting a Element: Fire Fire spell will trigger magical absorption where all magic heals it.
      • Casting Element: Earth Stone spells will trigger physical absorption where all physical damage heals it.
      • Using the appropriate type of damage during casting above 25% is acceptable, modes are changed after the spell is complete.
    • Switches to elemental magic one tier higher than used while >50%.
  • Below 25% HP:
    • Absorbs damage during any spellcasting.
  • While Onychophora does not possess innate resistance to Silence, he will continue to behave as if he was not silenced. Switching modes silently and changing the absorption damage type.
  • Silence is potentially useful in a group however, at 25% and lower to limit healing Onychophora while it is casting a spell.
  • Spawns Onychophora's Sandworm after any Skillchain is performed on it. The amount spawned varies based on the level of the skillchain
    • x2 for a Lv1
    • x4 for a Lv2
    • x6 for a Lv3
    • x8 for a Lv4 (Light→Light, etc)
    • If a skillchain is repeated it will not spawn more sandworms on top of existing sandworms unless a higher level skillchain was performed.
  • Will counterattack with Doomvoid, a 1-shot K.O. for your entire alliance, if hit with the same Skillchain repetitively.
    • The same skillchain may not be repeated within the last five skillchains performed.
  • Builds power for Disgorge by absorbing damage as well as using Gorge. Backup tank advised.
  • Possess a unique TP move called Psyche Suction which is an unremovable and significant Impact style stat reduction.
  • Possesses the Dustvoid attack, which removes all equipped gear on the target but does not inflict Encumbrance. Have a macro ready to re-equip lost equipment.
  • Possesses relatively low attack power compared to other Reisenjima HELM monsters.
  • Has approximately 453 AGI.

Type Amorphs
Family Sandworm
Job Fighter's Mask icon.png Warrior
Sub Job Wizard's Petasos icon.png Black Mage
Class Geas Fete NM
Physical Damage Magical Damage Breath Damage Slashing Blunt H2H Piercing Ranged
100% 100% Question 100% 100% 100% 100% 100%
Element: Fire Element: Wind Element: Thunder Element: Light Element: Ice Element: Earth Element: Water Element: Dark
Question 85% 50% 50% 50% 5% 50% 50%
A: Absorbs · S: Susceptible · R: Resists

During battle some monsters may change resistances.

100% denotates that a monster takes full damage.

  • E.g At 5% a foe takes -95% damage.

Tiers of 50% or less guarantee an enfeeble resist with 5% causing immunity.

See the Resist and Damage Type pages.


Listings by Zone
Zone Rewards Abilities Spells
FFXIDB Icon v3.png

     Forced: Examine ??? with a Onychophora's soil.
All members require Tribulens or Radialens.
Aeolian Void
Psyche Suction
Slaverous Gale
Stone V
Stonega IV
Fire V
Firaga IV
Stone VI
Stonega V
Fire VI
Firaga V
Level Aggro Links Detects HP DEF EVA Magic DEF
150 XX CheckCheck 1386
Assisted By Title Traits MP
Onychophora's Sandworm Onychophora Obliterator CheckCheck


Ability Y' Area Target Class Type Effect Copy Image.png Condition
Aeolian Void AoE Conal Magical Damage Element: Wind Damage + Blind + Silence.
Disgorge AoE Conal Magical Damage Element: Earth Damage dealt to targets based on HP absorption from Gorge as well as passive damage absorption.
Doomvoid AoE Magical Damage K.O.s entire party. Multiple repeat skillchains being performed.
Dustvoid AoE Magical Damage Element: Earth Damage + Knockback + removes all equipment.
Gorge AoE Magical Damage Absorbs HP. Absorption is divided by targets within range.
Psyche Absorption AoE Conal Magical Damage Element: Earth Absorbs HP and randomly between 1-300+ of each attribute from players in range for 60 seconds.
Stat down is not erasable.
Slaverous Gale AoE Conal Magical Damage Element: Earth Damage + Slow + Plague.
Area: 1P, AoE, Gaze, Conal · Target: Who the ability selects, Player or Monster
Class: Physical-Magical-Breath-Buff · Type: Element (E.g ice) or Damage Type (E.g piercing or blank)
Copy Image.png: Utsusemi shadows consumed (#), B Bypasses, but does not remove shadows, R Removes all shadows.


Onychophora are ecdysozoan segmented invertebrates and prey upon smaller animals such as insects, which they catch by squirting an adhesive mucus. In appearance they have variously been compared to worms with legs, caterpillars, and slugs.

Inversely, in FFXI Onychophora does not need to rely on the mucus of it's Slaverous Gale to catch its prey. As it can simply Doomvoid your party out of existence.

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