X series robots

The X series robots are boss enemies appear in Persona 2: Eternal Punishment.

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The X series robots are bipedal panzer co-developed by Police department and Self Defense Forces, conducted by General Sugawara of ground army. The cockpit contains nerve implant device to connect the pilot's brain with the operating system of the robot for enhancing synchronization. The heavy firepower from and  and the "Muramasa Copies" wielded on their right arms for sealing the Persona ability from Persona user temporarily suggest the purposes of development of these machines are far beyond the nominal riot control.

X-1 is first seen deployed to the Abandoned Factory by New World Order for annihilating their contracted mafia from Taiwan, Tien Tao Lien, and Maya Amano's group. When Maya and her fellows invade Nichirinmaru, four X-1 robots are guarding before Tatsuzou Sudou, one of them is taken care by Tatsuya Suou. In the Undersea Ruins, player will fight Takahisa Kandori alongside four X-2 robots if Kei Nanjo is in the party.

These robots are the equivalences of the Knights of the Holy Lance in the ''Persona 2: Innocent Sin universe which also possess the same ability of sealing Persona ability.