|Final Fantasy X Original Creation|
|Sensor||Immune to Sensor.|
|Common Steal||Gambler's Spirit|
|Rare Steal||Lv. 1 Key Sphere|
|Common Drop||Fortune Sphere|
|Rare Drop||Dark Matter|
|Weapon Drop||Triple Overdrive|
|Abilities||Physical attack, Flare, Megaton Punch|
|Resistant to||Zanmato (Lv. 5)|
|Immune to||Silence, Sleep, Darkness, Poison, Petrification, Slow, Zombie, Power Break, Magic Break, Armor Break, Mental Break, Threaten, Death, Provoke, Sensor, Scan, Gravity, Delay, Eject|
The Earth Eater is a special fiend in Final Fantasy X bred as part of the Original Species of monsters in the Monster Arena. It physically resembles the Chocobo Eater fought at the Mi'ihen Highroad earlier in the game, but is much tougher. To unlock the Earth Eater, at least two Area Conquest monsters have to be bred, though not necessarily defeated. Earth Eater will drop weapons with Triple Overdrive, armor with Auto-Potion, and a Fortune Sphere.
The Earth Eater can instantly kill characters with its Megaton Punch attack/counterattack, although characters equipped with Deathproof and/or Auto-Phoenix can help negate this. Like the Chocobo Eater, Earth Eater can be knocked onto its back. It will still counterattack, but switches to reflecting Flare off itself. Like all Original Creation monsters, Earth Eater seems to have no trouble attacking characters regardless of their evasion. It has Auto-Reflect.
When farming Earth Eater for Fortune Spheres, the player will want to kill it as fast as possible. The party should have two backup characters to have low life (9999 and below) and the Entrust ability. The party should equip their Celestial Weapons if possible and preferably use the Avenger Overdrive Mode, and Auto-Phoenix is useful as well. Wakka should have high Strength and Agility, preferably close to maximum.
The fastest strategy is to expend all of Overdrives with 12-hit Attack Reels as quickly as possible. Every instant party member death will fill two Overdrive gauges by ~95%. Characters should Entrust them to Wakka, and after a couple Attack Reels the player wins. To farm the Fortune Spheres it is best not to hit the save sphere between battles because the party should have the lowest amount of life possible to die instantly from Flares to fill the Overdrive gauge.