Fighter Pugiliths are enemies in Xenoblade Chronicles X. They are Pugilith machines, Ganglion's vehicles, and can be found at levels 21-30 in Noctilum. One can be found at level 24 at the Lotus Keep Building Site, one hex northwest of FN Site 210.
They drop New Cylinders, two of which are needed for Skell Repair: Cylinder and It's-a Mia!. They are lower level than the Guardian Pugiliths mentioned in the mission's objectives as a source for New Cylinders.