FINAL FANTASY X AEONS LIST

Valfor (from Besaid Temple):
Attack - Sonic Wing
[Black Magic] Fire (4MP)
[Black Magic] Blizzard (4MP)
[Black Magic] Thunder (4MP)
[Black Magic] Water (4MP)
*Shooting Ray
*Shooting Power

NOTES:
Having Yuna's Nirvana allows Valfor to exceed maximum damage.
Sonic Wing attacks one enemy and attempts to Slow it.
Shooting Ray & Shooting Power are non-elemental attacks on all enemies.
Shooting Power is aquired by talking to a lady playing with her dog outside of Besaid Temple to the left OR in the first house to the southeast of the temple, a guy will be on the sewing machine and the dog will be behind him.

Ifrit (from Kilika Temple):
Attack - Meteor Strike
[Black Magic] Fire (4MP)
[White Magic] Ba-Fire (2MP)
[White Magic] Ba-Cold (2MP)
*Hell Fire

NOTES:
Having Wakka's World Champion allows Ifrit to exceed maximum damage.
Meteor Strike attacks one enemy.
Ba-Fire is a Barrier against Fire spells.
Ba-Cold is a Barrier against Blizzard spells.
Hell Fire is a Fire elemental attack on all enemies.
Casting Fire spells on Ifrit will heal it.

Ixion (from Djose Temple):
Attack - Aero Spark
[Black Magic] Thunder (4MP)
[Black Magic] Thundara (8MP)
[White Magic] Ba-Thunder (2MP)
[White Magic] Ba-Water (2MP)
*Thor Hammer

NOTES:
Having Kimahri's Longinus allows Ixion to exceed maximum damage.
Aero Spark attacks one enemy and attempts to Mute it.
Ba-Thunder is a Barrier against Thunder spells.
Ba-Water is a Barrier against Water spells.
Thor Hammer is a Thunder elemental attack on all enemies.
Casting Lightning spells on Ixion will heal it.

Shiva (from Macalania Temple):
Attack - Heaven Strike
[Black Magic] Blizzard (4MP)
[Black Magic] Blizzara (8MP)
[White Magic] Ba-Fire (2MP)
[White Magic] Ba-Cold (2MP)
*Diamond Dust

NOTES:
Having Lulu's Knight of Onion allows Shiva to exceed maximum damage.
Heaven Strike attacks one enemy and attempts to Stop it.
Ba-Fire is a Barrier against Fire spells.
Ba-Cold is a Barrier against Blizzard spells.
Diamond Dust is an Ice elemental attack on all enemies.
Casting Blizzard spells on Shiva will heal it.

Bahamut (from Bevelle Temple):
Attack - Impulse
[Black Magic] Fire (4MP)
[Black Magic] Thunder (4MP)
[Black Magic] Water (4MP)
[Black Magic] Blizzard (4MP)
[Black Magic] Fira (8MP)
[Black Magic] Thundara (8MP)
[Black Magic] Watera (8MP)
[Black Magic] Blizzara (8MP)
[Black Magic] Firaga (16MP)
[Black Magic] Thundaga (16MP)
[Black Magic] Waterga (16MP)
[Black Magic] Blizzaga (16MP)
[White Magic] Libra (1MP)
*Mega Flare

NOTES:
Impulse attacks all enemies.
Libra is Scan.
Mega Flare is a non-elemental attack on all enemies.

Youjinbo (from Cave of Stolen Fayth):
[Dog Attack] Daigorou
Short Swords
[One Enemy] Sheathed Sword
[All Enemies] Sheathed Sword
[One Enemy] Demon Cutting Sword

NOTES:
Having Auron's Masamune allows Youjinbo to exceed maximum damage.
When getting Youjinbo you can haggle from 270,000 or 250,000 if you don't have 300,000 gil.
The attacks are listed from weakest to strongest.
To get the "head chop off move" is partially random and you should reset it after you saw it (chances are you blew all your money).
In general, if you spend nearly all your money on him each time, don't retreat without attacking first, don't let Youjinbo KO, don't pay him 0 gil, and have your OD bar full at all times... then you have higher chances of seeing it.

Anima (from Baaj Temple):
Attack - Pain
[Tech] Sleepel Attack (5MP)
[Tech] Silence Attack (5MP)
[Tech] Blind Attack (5MP)
[Tech] Sleepel Buster (10MP)
[Tech] Silence Buster (10MP)
[Tech] Blind Buster (10MP)
[Tech] Zombie Attack (10MP)
[Black Magic] Fire (4MP)
[Black Magic] Thunder (4MP)
[Black Magic] Water (4MP)
[Black Magic] Blizzard (4MP)
[Black Magic] Fira (8MP)
[Black Magic] Thundara (8MP)
[Black Magic] Watera (8MP)
[Black Magic] Blizzara (8MP)
[Black Magic] Firaga (16MP)
[Black Magic] Thundaga (16MP)
[Black Magic] Waterga (16MP)
[Black Magic] Blizzaga (16MP)
[Black Magic] Bio (10MP)
[Black Magic] Death (20MP)
*Chaotic D

NOTES:
To get Anima you must have completed the broken sphere puzzles at all the other Aeon shrines and gotten the treasures.
Pain attacks one enemy and attempts to cast Death.
Chaotic D attacks all enemies for non-elemental damage.

Three Magus Sisters (from Remiam Temple):
Special Attack Names:
[Dog] Shimmer Tendo (attack with arm blades on fire)
[Mag] Angel Tear (rise with water and land on enemy)
[Rag] Returnal (attack with 17 multiple stings)
*Delta Attack (overdrive when "Power Combine!" is selected)

Command List:
[Dog] Entrust
[Dog] Continue
[Dog] Fight (physical or special attack)
[Dog] Protect (support magic)
[Dog] Power Combine!
[Mag] Entrust
[Mag] Continue
[Mag] Fight (physical attack)
[Mag] Persevere (magic or special attack)
[Mag] Help Everyone (recovery magic)
[Mag] Power Combine!
[Rag] Entrust (special, magic or physical attack)
[Rag] Continue
[Rag] Fight (physical or special attack)
[Rag] Get Stronger (drain HP & MP from enemy)
[Rag] Power Combine!

NOTES:
To get them you must capture the monsters from Nagi Plains and Gagazett Mountain for the Monster Trainer and beat all your Summons against Bergemine.
Dog, Mag and Rag are aka Sandy, Cindy, Mindy (FFIV).
Dog is a skinny grasshopper, Mag is a fat ladybug and Rag is a Bee.
Entrust means let AI choose.
Continue means repeat the command.
Power Combine! means do their overdrive.
Depending on what you did, each character may not have all commands.
Overdrive Delta Attack is non-elemental and hits all enemies.