Oh! for the name, i could easily rip something out of my head when i get you down. For the core, I still have no clue. I MIGHT have an idea, but it'll be revealed in chapter 5, cause something happens. And your character will be Human.
ai'ight, you wanted to be in my story. I can give you two options: I could make some random secret society that resides inside a cave 9in which Tokoris can join) or you can be on of them random guys in the desert who helps Tokoris out. So pick which one you want to be.