- Fenrir is subject to a perpetuation cost based on the level of the Summoner. See Avatar Perpetuation Cost.
- Fenrir's perpetuation cost starts at 1 MP/3s at level 1, becoming 13 MP/3s at level 99, before Refresh or Auto-Refresh effects.
- Using Avatar's Favor with Fenrir active creates an aura granting Fenrir's Favor (Magic Evasion +) to party members within the area of effect.
- Fenrir's attack delay is 280, and he gains 7.4 TP per hit.
Fenrir's Blood Pacts are all dark-based.
|Howling Moon||1||LVx2||Required MP: Caster's level x2. Uses all MP and delivers dark elemental damage to enemies within an area of effect. Also reduces STR of enemies.||Available only while Astral Flow is in effect.|
|Moonlit Charge||5||17||S||Blinds target.||Skillchain property: Compression.|
|Crescent Fang||10||19||S||Paralyzes target.||Paralyze effect seems more potent than the effect of Paralyze I. Skillchain property: Transfixion|
|Eclipse Bite||65||109||Delivers a threefold attack.|
|Lunar Bay||78||174||T||Deals Darkness damage to target. (Damage varies with TP)|
|Lunar Cry||21||41||Lowers target's accuracy and evasion.||The amounts vary with moon phase, but always add up to -32.|
Accuracy lowered more ← 100% « moon phase » 0% → Evasion lowered more.
|Lunar Roar||32||27||Removes two beneficial magic effects from enemies within an area of effect.||No message is produced in the log when effects are removed.|
|Ecliptic Growl||43||46||Enhances attributes of party members within area of effect.||The amounts vary with moon phase, but the two categories always add up to +8.|
STR/DEX/VIT boost higher ← 100% « moon phase » 0% → AGI/INT/MND/CHR boost higher. Lasts 180 seconds.
|Ecliptic Howl||54||57||Enhances accuracy and evasion of party members within an area of effect.||The amounts vary with moon phase, but always add up to +26.|
Accuracy boost higher ← 100% « moon phase » 0% → Evasion boost higher. Lasts 180 seconds.
|Heavenward Howl||96||96||Party members within area of effect will be able to steal enemy HP or MP.||Grants party member Endrain or Enaspir depending on moon phase. Waxing Crescent is Endrain, while the new moon is Enaspir.|
1 S/T column indicates whether a particular Blood Pact participates in Skillchains (S) or uses TP (T). Blood Pacts that use TP can be used as a Magic Burst; however, Astral Flow can also Magic Burst even though it does not use TP.