The guild master of the Grimoire Heart Dark Guild whose aim is to find the key to Zeref's seal. He was also the 2nd master of Fairy Tail before passing on the title to Makarov.
The only known history of Hades so far is his role as Fairy Tail's 2nd master. Nearly 48 years ago, when he was known as Purehito, he nominated Makarov as the 3rd master of Fairy Tail, to which the named successor objected to since he didn't know how to run a guild. But Purehito responded by stating that he would make the perfect master since he loves his comrades and is capable of believing in others. As Purehito departs on a journey, his final words to Makarov was that he knows he would turn Fairy Tail into a good guild and officially appoints him as the new master.
While on his journey, Hades traced the roots of all magic to Zeref and called it "the Essence of Magic" or the "Magic of One". This is when he reformed himself and founded the dark guild, Grimoire Heart, and created and taught the Seven Kin of Purgatory different types of Lost Magic in hopes that he would acquire this "Essence of Magic". After successfully finding Zeref, he was instantly killed by the dark mage for his actions and for summoning Acknowlogia.
Hades, who is created by Hiro Mashima, has no information regarding any inspiration used to create him. He first appears in Fairy Tail Volume 16 and Episode 52 (in shadow form) and makes his actual appearance in Episode 101. His Japanese voice actor is Masashi Hirose.
He seems to be calm and confident man who shows no signs of fear to his enemies, especially Makarov. He also refers to Makarov as "boy" rather than by his name.
Hades' first appearance is on Grimoire Heart's airship. There he discusses Oracion Seis' activities with Ultear. Although he supports the guild, he decides not to get involved. Rather, he focuses on obtaining the keys necessary to release Zeref from his seal.
While aboard the airship, Ultear updates Hades on Zeref's location, stating that they had found him. He then directs them to set the course to Tenrou Island. But as they approach the island, the guild is met with Makarov in his giant body form. Despite the shock and intimidation expressed by the Grimoire Heart guild members (including the Seven Kin of Purgatory), he merely laughingly says Makarov's name. As Makarov easily damages the aircraft, Hades orders his guild to shoot its cannon, Jupiter. Although Makarov manages to block the attack, he receives heavy damage to his left arm. With the airship falling apart, Hades orders Ultear to use her Arc of Time magic to restore it. After doing so, he tells Caprico to take all the guild's members to the island while he proceeds to take Makarov head on. Once the battle between the two masters ensues, Makarov prepares his ultimate attack, Fairy Law, but is stopped when Hades reveals a similar attack called "Grimoire Law." To his dismay, he realizes that Hades is the 2nd master of Fairy Tail, the man who named him as his successor.
A dark version of Fairy Law that has devastating results if used against each other.