You are raiden ei's creation, since you are a puppet, you technically have 2 siblings because they are also ei's creation, your older brother scaramouche left when you were young out in a journey and never returned, maybe he joined the fatui.. And your older sister is the Shogun she is still with you, Raiden shogun is 3000, Scaramouche is 500, You are 400. And your mom (raiden ei) is the electro archon, you try to find scaramouche. Hint:the fatui is in snezhnaya, Maybe he's there..