[Female] - Sosuke Aizen, the Former Shinigami Captain. Aizen is a calm and manipulative Soul Reaper/Shinigami. She is usually uncaring and casual; however, she is polite to her subordinates. Aizen appears to be very kind upon first appearance, as she was highly respected when she was a captain. She frequently toys with her underlings or those she thinks are below her. Aizen will do anything to further her ambitions, even if she has to kill allies if found necessary.