Red/Maroon

Scythe of the Unmaker (Mythic)
Source: Antorus, the Burning Throne
Pauldrons of the Argent Sentinel
Source: Serpentshrine Cavern
Backbreaker Spaulders (Heroic)
Source: Dragon Soul
Necrotic Boneplate Pauldrons, Necrotic Boneplate Shoulderguards
Calamity's Edge (Normal)
Source: Hellfire Citadel
Ashkandi, Greatsword of the Brotherhood
Source: Blackwing Lair
Warmongering Gladiator's Battle Staff (Alliance)
Source: Vendor
Wild Gladiator's Battle Staff
Stalk of Corruption
Source: Hour of Twilight
Plunderlord's Waistcoat
Source: Vendor
Plunderlord's Tassled Spaulders
Source: Vendor
Plunderlord's Tricorne of Admiralty
Source: Vendor
Warhammer of Arrogance (Normal)
Source: Hellfire Citadel
Maul of Tyranny
Witch Doctor's Fetish Guard
Source: Vendor
Royal Witch Doctor's Guard
Source: Vendor
Verdant Gladiator's Plate Chestplate (Elite)
Source: Vendor
Verdant Gladiator's Plate Chestguard
Casket of the Risen Nightmare (LFR)
Source: Amirdrassil, the Dream's Hope
Ironspine's Ribcage
Source: Scarlet Monastery
Brigade Breastplate
Molten Vanguard's Plackart (Mythic)
Source: Amirdrassil, the Dream's Hope
Carapace of the Unbending Flame
Verdant Gladiator's Plate Chestplate (Elite)
Source: Vendor
Verdant Gladiator's Plate Chestguard