Kusariqqu is an enemy in Final Fantasy X encountered in the Thunder Plains.
Kusariqqu is an armored foe that uses two attacks: a head bash that can cause Slow and a Thunder Breath attack that strikes the entire party with Lightning damage.
Kusariqqu will drop armor with Slow Ward and HP +5%. It will drop weapons with any of the elemental strikes as well as Strength +3%/Magic +3%.
Like others of its kind, this enemy has a tough hide, so Auron's or Kimahri's Piercing weapons work the best.