Roubaul was a member of the Nirvit, a neutral tribe from the past, and the creator of the Nirvana Magic. He also acted as the Guild Master of the nonexistent Cait Shelter Guild to take care Wendy Marvell.
Fairy Tail is a series about a guild with the same name. But aside from Fairy Tail, there are other various guilds in the fictional world of Earth land. How does each guild differ from the other? Let's find out.