Several key characters from the sixth era:
Siegfried Thossun: A human born in the latter half of the era, but is perhaps the most powerful djinn to have ever existed (jury is still out on that one). He becomes one of the most important figures of the era, but his roots are surprisingly humble: he was a carpenter's apprentice in a small northern village on dulme. He has a tendency to stick his nose where it doesn't belong and cause a bunch of problems, but you can always rely on him to fix them.
Justinian Law: A human born around the same time as Siegfried to a very poor family on Ulquea. Becomes an awesome pirate dude and that's all I'm gonna say.
The Iron Princess: An Elf princess of a kingdom in Elrean who was horribly disfigured at a young age. In order to save her life, she was fitted with various magitech implants and steel plates, giving her the unfortunate (if somewhat BA) title she has today. She is known for wearing full plate armor almost everywhere she goes, and often wears either a full helm or an Iron mask.