Ragnaros was the trick to obtaining Tier 2 legs, which meant that many guilds continued to operate Molten Core for months after they were completed farming the rest of cheap wow classic gold. The Firelord drops the Eye of Sulfuras, a item that allows classes to make the legendary two-hander, Sulfuras, Hand of Ragnaros.
So far as raid managers go, aka Nefarian, Lord Nefarius, has much more character. Players were first introduced to him while conducting the Upper Blackrock Spire dungeon, where he would advocate his minions to kill the celebration's sanity:"Fools! "Let the games begin!"
Hakkar is the boss of this Zul'Gurub 20-man raid instance. But players were acquainted with him long before that, as Hakkar, or rather his Avatar, was one of the final bosses from the Sunken Temple 5-man dungeon. While Hakkar is unforgettable on his own, he is included on this record because of the notoriety of one of his skills during the fight in ZG.
Corrupted Blood is a damage over time spell which could quickly spread throughout the raid if players are not careful. When Zul'Gurub was first released, it was really possible for a player with this disease to bring it out of this case and into a major city. Corrupted Blood spread like wildfire, killing hundreds of low level players that did not know what hit them. The incident made headlines in the mainstream media, with sociologists and scientists analyzing it as an instance of how humans might respond to the spread of a deadly plague in real life.
Blizzard eventually patched the ability, however if Den of Geek talked to some classic wow gold sellers programmer about Classic around the time of this beta's launch, it had been indicated to us that gamers could just get another chance to get some fun with Corrupted Blood...