|Final Fantasy X Boss|
|護法戦機 (Gohō Senki)|
|Sensor||Made of Stone. Resistant to Physical Attacks.|
|Common Steal||Lunar Curtain x4|
|Rare Steal||Lunar Curtain x4|
|Common Drop||Lv. 2 Key Sphere|
|Rare Drop||Lv. 2 Key Sphere|
|Weapon Drop||Piercing, Strength +3%, Strength +10%, Magic +5%, Magic +10%, Distill Power|
|Armor Drop||SOS Protect|
|Abilities||Blast Punch, Haymaker, Mighty Guard, Slowga|
|Resistant to||Darkness (95)|
|Immune to||Silence, Sleep, Poison, Petrification, Slow, Zombie, Threaten, Death, Gravity, Delay, Eject|
The party cannot escape.
- Guado Guardian A: "Lord Seymour's commands must be obeyed. You will come!"
- Guado Guardian B: "I warn you, the maester doesn't need you alive."
- —Guado Guardians demanding the party to surrender.
A good way to start off the battle is to use Auron's Armor Break and Wakka's Dark Attack to blind it. If Lulu has learned any level three spells, she can be used to great effect, and the damage she can do will be improved if Auron wipes out Defender X's Magic Defense with Mental Break.
An easy way of defeating Defender X is to have Tidus cast Provoke on it. This way the boss will only use Blast Punch on that character, and since the attack only halves the current HP, the character will not risk being KO'ed. This method also applies to the Defender Z enemies found in Zanarkand and the Omega Ruins.