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A "force field" employed by various ranks and types of Zonder Metal/Z Crystal-based organisms that deflect varying strengths of physical and energy-based attack, based on the relative strength of its user.
A Barrier System can be penetrated with an attack of a higher strength than that of the Barrier System, or nullified with a barrier-negating ability such as Galeon's "roar" or Volfogg's Melting Siren.