Read from the World of Warcraft client build files.
How Grievous Gladiator's Chain Helm Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Grievous Gladiator's Chain Helm suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Grievous Gladiator's Chain Helm is part of the transmog set Grievous Gladiator's Chain Armor (Hunter only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Grievous Gladiator's Chain Helm Fits
Other Items Named Grievous Gladiator's Chain Helm
4 other items in the current build are also called Grievous Gladiator's Chain Helm. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Grievous Gladiator's Chain Helm
Blizzard numbers items as they are created, so the named items next to ID 100636 (100631 to 100641) were usually added in the same batch as Grievous Gladiator's Chain Helm: the same quest line, zone, vendor or reward set.