|Final Fantasy X Original Creation|
|Sensor||Immune to Sensor.|
|Common Steal||Gambler's Spirit|
|Rare Steal||Lv. 2 Key Sphere|
|Common Drop||Designer Wallet|
|Rare Drop||Dark Matter|
|Weapon Drop||Darkstrike, Silencestrike, Sleepstrike, Poisonstrike, Stonestrike, Zombiestrike, Slowstrike|
|Armor Drop||Darkproof, Silenceproof, Sleepproof, Poisonproof, Stoneproof, Zombieproof, Slowproof|
|Abilities||Demi, Hundred Thorns, Toxic Cloud, Toxic Spray|
|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|
Catastrophe is a special monster in Final Fantasy X bred as part of the Original Creation in the Monster Arena, and becomes available after six monsters have been bred in the Area Conquest section. Catastrophe looks much the same as Sinspawn Geneaux fought on the steps of Kilika Temple, and Sinspawn Genais that is fought on Sin.
When the fight begins, its shell will be enclosed, periodically releasing Poison. After suffering 500,000 HP in damage, Catastrophe will come out of his shell and begin unleashing a variety of attacks which inflict all Breaks and Demi, as well as heavy damage.
- In its shell: Skip turn, Toxic Cloud
- Out of its shell: Toxic Spray, Demi, Hundred Thorns
To defeat this monster, a good strategy is to have have a party with Yuna, Wakka, and another person of player's choice to kill Catastrophe. The player should have all of their Celestial Weapons to do this. First, Wakka should have assigned Warrior Overdrive Mode. The first recommended ability to be used is Hastega with whoever goes first. The player will have plenty of time to buff up, as Catastrophe does not attack or counter-attack until much later. Have Yuna cast Auto-Life on all characters while Wakka and the other character begin attacking Catastrophe.
Whenever Wakka gets his Overdrive gauge full, use his Attack Reels Overdrive and attempt to land all "2 Hit" blocks, making for 12 attacks total. With a fairly high Attack stat, this should knock down a considerable amount of his health. When Catastrophe comes out of his shell, use other characters' Overdrives, as it will do much more damage now.
When Catastrophe attacks, it will either use Toxic Spray or Hundred Thorns. Toxic spray will kill one character unless the player has either Break HP Limit or Protect, and its Hundred Thorns will do the same, except on the entire party. If the player fails to kill the fiend before it attacks, there should be no problem as they player should have already cast Auto-Life on all their characters.
When the player gets back up, cast Hastega again and have Yuna cast Auto-Life on as many people as she can with priority being herself and do as much damage as possible with Wakka and the other character. With fairly high levels, it should be no problem to win.