Where to begin...
Oh, I know! How about the beginning! That will throw people off!
A very, very long time ago, there was a woman named Theriss. She was not a very nice woman. Demonology, in a cult, cheated on her husband, that sort of stuff. It began with her. In one of her strange and creepy rituals, she had sex. And got pregnant. With triplets. All girls. When they were born, she and her husband gave them the names Grimnek, Hevrah, and Senjak. We were taken away by our father, because he knew about the terrible things our mother did, and wanted us to have no part in it. His plan failed, however, because the three of us were already marked for great things. Grimnek could make anything. All she needed were a few raw materials and she could build marvelous contraptions. Hevrah was born with the power to command others. Not in any overt way, but if she asked you to do something, you would try your damnedest to get it done. And I, Senjak, was born with the power to kill.