Giant Grexes are enemies in Xenoblade Chronicles X. They are members of the Grex family, and can be found at level 22-25 near North Janpath Plain, and level 21-23 or 27 at Grieving Plains in Primordia. Three must be defeated using specific weapons to complete Proficiency Exam 7, which in turn must be completed before owning a Skell.
|Body||Grex Wisdom Tooth||Material||Common|
|Tail||Jagged Grex Tail||Material||Common|