Ragnaros

Ragnaros the Firelord is the ruler of all fire elementals in the Warcraft universe, and one of the four elemental generals of the Old Gods. Ragnaros was the first Elemental Lord to appear in the game and one of the original endbosses of World of Warcraft, being the final boss of the Molten Core raid inside Blackrock Mountain, where he was summoned by the Dark Iron Dwarves. Ragnaros' body is a massive swirling vortex of flame, a trait which has since been recycled for several other characters, and wields an enormous hammer called "Sulfuras, Hand of Ragnaros", which was one of the first "Legendary" items in the game.

Ragnaros returns in Cataclysm (which also features the other three elemental lords), where he has been summoned again in Mount Hyjal and is working with Deathwing to destroy Nordrassil. After a long campaign of quests, he is faced by the player, along with Cenarius, Malfurion Stormrage and Hamuul Runetotem in his inner sanctum and defeated again, however the player is told that Ragnaros is still a threat and can only actually be killed inside his home dimension of the Firelands.

Ragnaros will thus be faced for the final time in a future raid dungeon inside the Firelands. Here, he will have a new model of his "true form" that is fully humanoid and has legs, which has been ridiculed by many fans and resulted in several parody images.