Mech is a category of enemies in Final Fantasy X and Final Fantasy X-2. Mechs are a form of machine, or 'machina', but have notable differences compared to enemies classified as machina. In Final Fantasy X, mechs cannot be instantly destroyed by Steal, while machina can, mechs have a stone-like appearance while most machina appear to be made of metal, and some mechs are used by Yevon. All mechs are capable of status attacks, as well as multiple chain attacks.
Mech or Mecha is a term used in science fiction to identify a large robot.