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Aeons are divine creatures that only answer the call of a true summoner. The only playable summoner in Final Fantasy X is Yuna. Each Aeon has unique powers and characteristics that will grow as Yuna does, and as new items are acquired.
Once an Aeon is summoned, all other party members leave the battle field. Only the Aeon will battle until the battle ends, the Aeon is defeated, or the Aeon is withdrawn. Aeons can use unique attacks, common skills or spells, and even have their own overdrive!
Other Aeon commands include Shield and Boost. Press Right on the D-Pad to see these subcommands along with Dismiss, which will withdraw the Aeon from battle. Shield will allow the Aeon to take only 1/4th damage from attacks until the Aeon’s next turn, but their Overdrive gauge will not fill up. Boost causes the Aeon to receive more damage, but will charge the Overdrive gauge by 2x.
Additional abilities can be taught to an Aeon when the Summoner’s Soul key item is obtained in the Moonflow. Use various items to teach Aeons new abilities.
An Aeon’s attributes (HP, MP, Strength, Defense, Magic, Magic Defense, Agility, Luck, Evasion, and Accuracy) can be increased once the Aeon’s Soul key item is obtained in the Calm Lands. The same spheres used on the Sphere Grid can be used to increase an Aeon’s attributes.
There are a total of eight Aeons available in Final Fantasy X. Many of them are obtained automatically as you progress through the story, but some require special measures to acquire.
Valefor
Valefor is the very first available Aeon in Final Fantasy X. It is obtained after completing the Cloister of Trials in the Besaid Temple. This Aeon has high accuracy and various non-elemental attacks.
The unique attack exclusive to Valefor is Sonic Wings. This is a non-elemental attack that damages one enemy and delays their next turn.
Valefors Overdrive is the Energy Ray. This is a non-elemental beam attack that hits all fiends in battle.
A second Overdrive attack can be obtained later in the game. Return to Besaid and talk with the little girl with a dog near the Besaid Temple. She will give you an item that allows Valefor to use the Energy Blast attack. This is a non-elemental attack that does more damage than the Energy Ray, but requires more recovery time.
Obtain and power up Yuna’s Celestial Weapon, Nirvana, to increase Valefor’s damage limit beyond 9999.
Ifrit
Ifrit is the second available Aeon in Final Fantasy X. It is obtained after completing the Cloister of Trials in the Kilika Temple. This Aeon has high Strength, but its Defense and Magic Defense are really low. Ifrit is a fire Aeon, which means it can regain HP by casting fire spells on itself!
The unique attack exclusive to Ifrit is Meteor Strike. This is a non-elemental long-range attack that damages one enemy, but has a longer recovery time compared to a regular attack. It can even penetrate Protect spells!
Ifrit’s Overdrive is Hellfire. This is a fire-based attack that damages all enemies on the field.
Obtain and power up Wakka’s Celestial Weapon, World Champion, to increase Ifrit’s damage limit beyond 9999.
Ixion
Ixion is the third available Aeon in Final Fantasy X. It is obtained after completing the Cloister of Trials in the Djose Temple. This Aeon has high Defense and Magic Defense. Ixion is a lightning Aeon, which means it can regain HP by casting lightning spells on itself!
The unique attack exclusive to Ixion is Aerospark. This is a non-elemental attack that damages one enemy and negates magical effects like Protect, Haste, and Nul-spells.
Ixion’s Overdrive is Thor’s Hammer. This is a lightning-based attack that damages all enemies on the field.
Obtain and power up Kimahri’s Celestial Weapon, Spirit Lance, to increase Ixion’s damage limit beyond 9999.
Shiva
Shiva is the fourth available Aeon in Final Fantasy X. She is obtained after completing the Cloister of Trials in the Macalania Temple. This Aeon has high Speed and Evasion. Shiva is an ice Aeon, which means she can regain HP by casting ice spells on herself!
The unique attack exclusive to Shiva is Heavenly Strike. This is a non-elemental attack that damages one enemy and inflicts the Threaten ailment, which delays the target’s next turn.
Shiva’s Overdrive is Diamond Dust. This is an ice-based attack that damages all enemies on the field.
Obtain and power up Lulu’s Celestial Weapon, Onion Knight, to increase Shiva’s damage limit beyond 9999.
Bahamut
Bahamut is the fifth available Aeon in Final Fantasy X. It is obtained after completing the Cloister of Trials in the Palace of St. Bevelle. This Aeon has high Strength, Magic, and Defense attributes, and has the auto-ability Break Damage Barrier, allowing its attacks to exceed 9999 damage.
The unique attack exclusive to Bahamut is Impulse. This is a non-elemental attack that damages all enemies on the field.
Bahamut’s Overdrive is Mega Flare. This is a non-elemental attack that damages all enemies on the field, and consistently deals over 9999 damage.
Yojimbo
Yojimbo is an optional Aeon found in the Cavern of the Stolen Fayth, which is beneath the bridge at the northeast end of the Calm Lands. Defeat Yojimbo in battle, then speak to him to recruit him. You will need to negotiate a price in order to get him onto your team. Try the following:
- 125,001 Gil
- 125,003 Gil
- 165,003 Gil
- 197,000 Gil
If you offer three times the amount (591,000), Yojimbo will give you two Teleport Spheres in addition to joining your party.
Unlike the other Aeons, you cannot select attacks for Yojimbo. Give him Gil and he will use a variety of attacks on his own.
Obtain and power up Auron’s Celestial Weapon, Masamune, to increase Yojimbo’s damage limit beyond 9999.
Anima
Anima is an optional Aeon in Final Fantasy X. It is obtained after completing the Cloister of Trials in the Baaj Temple, which can only be reached again after obtaining the Airship.
The unique attack exclusive to Anima is Pain. This is a non-elemental attack that damages one enemy, and has a high chance of causing instant death. Pain has a high recovery time.
Anima’s Overdrive is Oblivion. This is a non-elemental attack that damages all enemies on the field multiple times.
The Magus Sisters
The Magus Sisters are optional Aeons found in the Remiem Temple in the Calm Lands. This temple can be found after obtaining the Airship and gaining the ability to ride a Chocobo. You will then need to complete a few objectives:
- Capture all of the monsters at Mt. Gagazet, then return to the monster arena to get the Blossom Crown.
- Obtain all other Aeons and return to Remiem Temple in the Calm Lands.
- Defeat Belgemine’s Bahamut to earn the Flower Scepter, then proceed to defeat Yojimbo and Anima.
- After all battles, head to the door in the back of the Temple and unseal it to obtain the Magus Sisters.
The Magus Sisters are three Aeons in one. Unlike the other Aeons, the Magus Sisters require special commands in battle. The commands and their effects are listed below:
| Command | Effect |
|---|---|
| Do what you will. | They make the choice. Other commands become available. |
| Fight! | They use a regular Attack. |
| Go! Go! | They use a unique attack or casts magic spells. |
| One More time | They use the same attack as last time. |
| Defense! | They cast support magic spells. |
| Help each other! | They cast healing magic spells. |
| Combine Powers! | They use their Overdrive |
| Dismiss | Withdraw the Magus Sisters. |
Dark Aeons
Dark Aeons are incredibly powerful Aeons that are found in the International and HD Remaster versions of Final Fantasy X. They will appear at select locations in Spira after escaping Bevelle. It’s best to fight them after boosting up each player’s stats and obtaining Celestial Weapons.
| Aeon | Location |
|---|---|
| Dark Valefor | This Aeon can be found at the entrance of Besaid Village after obtaining the Airship. |
| Dark Ifrit | This Aeon can be found near Home (Bikanel Island) after obtaining the Airship. Speak with the Al Bhed there to fight it. |
| Dark Ixion | This Aeon can be found at the Thunder Plains after arriving in the Calm Lands. Speak with the Warrior Monk to begin battle. Ixion must be defeated twice. |
| Dark Shiva | This Aeon can be found at the Macalania Temple after obtaining the Airship. |
| Dark Bahamut | This Aeon can be found at the Zanarkand Dome after obtaining the Airship. It will be where Lady Yunalesca once stood. |
| Dark Anima | This Aeon can be found at Mt. Gagazet after reaching the Zanarkand Ruins, returning to the mountain, and completing the first Trials of Gagazet with Wakka. It will be at the entrance of the mountain. |
| Dark Yojimbo | This Aeon can be found in the Cavern of the Stolen Fayth after obtaining Yojimbo the first time. Yojimbo must be defeated five times to defeat him forever. You can save at the save sphere after the battle, but do not leave the cave, play Blitzball, or soft reset the game! |
| Dark Magus Sisters | These Aeons are found near the exit of Mushroom Rock Rock to the Mi’ihen Highroad. All three can be fought at the same time or separately. |
Defeat all the Dark Aeons to find Penance on the Spira NavMap in the Airship. Penance is an incredibly tough boss. Defeat it to unlock the Perseverance achievement and trophy.