Grexes (Japanese: ルプス, Rupusu, lit. Lupus; English dub: /ˈɡrɛks/) are wolf-like enemies in Xenoblade Chronicles X, primarily inhabiting Primordia and Oblivia.


"Keen and carnivorous, grexes are usually found in packs of a dozen or so creatures led by an alpha pair. These group hunters are as territorial as they are vicious; though their turf will often range over an expansive area, even accidental encroachment by another pack will be met with extreme prejudice."

"Despite all this, a lone grex is not an uncommon sight. Losing in a skirmish for alpha superiority is the principle cause of such wandering beasts, and starvation is the usual outcome. Caution is advised around such loners, as they tend to be especially ferocious."


Grexes resemble large wolves mixed with lizards. They have tough armor-like plates on the top half of their body, with exposed sinewy skin underneath. They have four small white eyes. Their tail is covered in jagged spikes.

Grexes are usually found roaming around, digging the ground, sleeping, or eating a carcass. They will detect a party member being in their line of sight, or by touching them.

Color Variants

Grexes fall into two color variants:

  • Silvery shaded Grexes, found in Primordia. They can drop White Mirrorglasses.
  • Darker shaded Grexes with spikes on their snouts, found in Oblivia. They can drop Opaque Mirrors.

Types of Grexes

Minor Enemies

Mission Exclusive Enemy




The Japanese name comes from the Latin word Lupus, meaning wolf. The English name comes from Latin, meaning a group or a flock. It is also a technical word used in practice for an aggregate of species, and as a nomenclatural group in hybrids botany.


  • A common glitch in the game disables Grexes' ability to detect Cross at medium and high character levels.

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