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Left Fin

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Sin's Left Fin is a boss in Final Fantasy X. This battle takes place during the fight to get inside Sin, and is the first of a series of boss fights. Like the battle against Evrae, the player is on the Fahrenheit and can fly in and out of range of physical attacks. Left Fin is almost identical to the Right Fin.


Final Fantasy X enemy stats
#167#168 #169
Location Monster Arena Species Other information
Fahrenheit Does not appear Unspecified Enemy is Tough. Armored enemy.
Sensor description Scan description
Immune to sensors Immune to scans
HP MP Strength Magic Defense Magic Defense
65,000 (10,000) 999 30 30 100 50
Accuracy Accuracy Evasion Luck AP (Overkill) Gil
20 1 0 15 16,000 (24,000) 10,000
Elemental affinities
Fire Ice Lightning Water Holy
100% 100% 100% 100% 100%
Statuses and immunities
Silence Sleep Darkness Poison Petrify Slow Zombie Power Break
Immune Immune Immune Immune Immune Immune Immune Immune
Magic Break Armor Break Mental Break Threaten Death Provoke Doom (1Turns taken for target to die) Nul
0 Immune Immune Immune Immune Immune 0 0
Shell Protect Reflect Haste Demi Regen Distill Sensor
0 0 0 0 Immune 0 0 Immune
Scan Bribe Delay Zanmato Berserk Capture Physical Magical
Immune 0 Immune Lv. 4 0 Immune 0 0
Common steal (75%) Rare steal (25%) Common drop (87.5%) Rare drop (12.5%)
Mega-Potion Supreme Gem HP Sphere x1Overkill: x2 HP Sphere x2Overkill: x4
Equipment drop (100%) Weapon abilities Armor abilities
3-4 slots, 1-2 abilities Piercing, Poisonstrike Poisonproof None
Abilities Ronso Rage
Fin Bash, Gravija, Negation None


Sin will attack less frequently when the player is out of range. In short range, it uses Negation, a Dispel-like attack that dispels all positive status buffs, as a counter to many Skill-type attacks. It also uses Gravija, and can attack the entire party for approximately 1,000 damage.

The Fins' AI differs slightly, specifically, while fighting them close-up, on the turns not used for charging or unleashing Gravija. The Fins sometimes attack, and sometimes don't, but the exact mechanics of this differ between the two Fins. The attacks themselves are identical. In both cases, it is determined on how many times the party has attacked the arm since the last time it used its physical attack (whether close-up or at distance). Also in both cases, an attack from an aeon counts as two attacks.

The Left Fin follows the following:

  • 0 attacks: 33% chance of attacking
  • 1 attack: 66% chance of attacking
  • 2+ attacks: 100% chance of attacking

This counter is also used at a distance (for both arms), but the requirements vary. The Left Arm requires 7 hits to trigger an attack at distance, the Right Arm requires 5 hits prior to reaching 16,250 HP, and 3 hits after reaching 16,250 HP. The counter is reset whenever the attack is used. Up close and distance don't have separate counters; they run off the same one, just with up close having lower requirements to trigger.


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Final Fantasy Record KeeperEdit


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