The Hydraxian Waterlords are servants of Duke Hydraxis and enemies of the fire elementals, particularly Ragnaros. To this end, the Hydraxian Waterlords would offer assistance to any worthy invaders of the Molten Core, former home to Ragnaros. They would offer their essence, allowing adventurers to reach the sanctum of Ragnaros himself. The Hydraxian Waterlords ultimately serve Neptulon, the elemental lord of water. Neptulon, along with the other elemental lords, once served as heralds of the old gods. Though they initially fought against the old gods, they were ultimately enslaved by the old gods and used as pawns in the war against the titans. Neptulon, along with the other elemental lords, were ultimately defeated. The Hydraxian Waterlords would offer support during the invasion of the Firelands to end Ragnaros' violent reign once and for all. When the Burning Legion returned, Neptulon, along with the other elemental lords, were summoned by the shamans to do battle against the Burning Legion, a battle they would ultimately win.
Killing Desert Rumblers and Dust Stormers in Silithus as well as Greater Obsidian Elementals in the Burning Steppes awards 5 reputation points each until Honored.
Lord Incendius is a boss inside the Blackrock Depths. Killing him awards 15 reputation points per kill.
Huricanian is a rare air elemental that spawns in the Crystal Vale region of Silithus.
Killing Molten Giants, Ancient Core Hounds, Lava Surgers, and Firelords inside the Molten Core raid instance award 20 reputation points each until Revered.
Killing Molten Destroyers, Lava Reavers, Lava Elementals, Flameguards, and Firewalkers inside the Molten Core raid instance award 40 reputation points each until Revered.
Killing bosses other than Golemagg and Ragnaros inside the Molten Core raid instance awards 100 reputation points each.
Golemagg the Incinerator is the 7th boss of the Molten Core raid instance. Killing him awards 150 reputation points.
Killing Ragnaros, the final boss of the Molten Core raid instance, awards 200 reputation points. This only occurs if Ragnaros is killed inside Molten Core. Killing Ragnaros inside the Firelands awards no reputation points.