Fairy Tail

Organization Structure
Fairy Tail's structure is simple. The guild is run by the guild master. Guild Master make all decisions for the guild Mages are ranked simply by the rank of mission they are capable of handling from S to E- Rank, S-Rank mages being some of the strongest in the guild.

 

Induction
The process of joining the Fairy Tail Guild is simple. One simply requests permission to join from the guild master, who decides whether or not to allow the individual into the guild. Once accepted, members are branded with the Guild's insignia, in the color and location of their choice.

Headquaters
Magnolia

Melisa [Founder] [S-Rank]
Melisa was the first individual to recognize the influx of mages into the world. She created this guild in order to bring them together, with the hopes they could develop their talents together.

Mystral [S-Rank]
While Mystral is rarely seen in the guild, he is practically one of the strongest mages among the guild. When he arrives at the guild to accept a job, he casts a sleeping spell that could even knock out other S-Rank Mages in the guild. He dispels it after taking a job and leaving.

Jellal [S-Rank]
Jellal is one of the few members of the guild who is rarely seen in the guild, but is one of the strongest mages among the entire guild. Similarly to Mystral, his counterpart, when he arrives to pick a job, he comes with deep fog covering his identity which also contains a sleeping spell, as he don't want his real identity to be revealed. He hasn't maintained any connections with any guild member except for Melisa, who is the founder, and Mystral.

Alyra Noveria [S-Rank]
What Alyra lacks in raw arcane power, relative to the other S-Rank mages, she makes up for with versatility - having quite possibly the largest arsenal of spells out of anyone in the Guild. She is rarely seen at the guild hall itself, but keeps in touch with it's members and will show up when requested.

Altair Tiberius [A-Rank]
Altair spends most of his time inside the guild headquarters, unless he takes care of a job request. He has a habit of stripping down to his shorts, which was influenced by his training in Ice Magic - starting off by being able to survive in cold environments. He has a rivalry with Kyu Igneel, and he often fights him inside the guild headquarters.

Kyu Igneel [A-Rank]
Kyu spends alot of time outside the guild, picking fights with the various strong fighters in the world. Kyu also has a tendency to take jobs pertaining to dragons, his reasons for doing so known only to himself. He maintains  a friendly-albeit violent- rivalry with Altair Tiberius, and they often pick fights with each other within the guild hall.