Murussu is a fiend in Final Fantasy X. This enemy is found at Macalania Woods. Auron or Kimahri's piercing weapons can punch through its crystallized shell. Murussu's attacks will infrequently inflict Slow status. Fire spells will work, or a weapon equipped with Firestrike.
Murussu will drop armor with Berserk Ward and Defense +5%. They will also drop weapons with any of the elemental strikes and Strength/Magic +3%.