Don't you run, needles!
Cactuar is an enemy in Final Fantasy X found within Bikanel Island, in a village known as the "Cactuar Nation". The village is protected by a sandstorm until the player finishes a red-light, green-light minigame with the ten Cactuar Gatekeepers.
Despite its low HP, Cactuars are tough to defeat as they are agile and difficult to hit. Its high Magic Defense renders magic ineffective. Cactuars have the Armored auto-ability, which means only Piercing weapons can inflict maximum damage. Cactuars use a weak physical attack, but they also use the fearsome 10,000 Needles attack, which inflicts 10,000 points of damage, effectively knocking out its victim.
Cactuars yield a high chance of dropping weapons with Initiative and armor with HP Stroll, MP Stroll, and HP +10%. This, coupled with the amount of AP obtained at this stage of the game, makes the Cactuar a worthwhile enemy to kill.