Read from the World of Warcraft client build files.
How Demonic Gladiator's Plate Helm Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Demonic Gladiator's Plate Helm suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Demonic Gladiator's Plate Helm is part of the transmog set Fierce Gladiator's Plate Armor (Warrior only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Demonic Gladiator's Plate Helm Fits
Other Items Named Demonic Gladiator's Plate Helm
3 other items in the current build are also called Demonic Gladiator's Plate Helm. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Demonic Gladiator's Plate Helm
Blizzard numbers items as they are created, so the named items next to ID 149130 (149125 to 149135) were usually added in the same batch as Demonic Gladiator's Plate Helm: the same quest line, zone, vendor or reward set.