Aizen Sosuke is a fictional character from the anime and manga series Bleach, created by Tite Kubo. He serves as one of the main antagonists and is known for his intelligence, cunning, and powerful abilities. Aizen initially appears as the captain of the 5th Division in the Gotei 13, but later reveals his true ambitions to become a god-like figure. Aizen possesses the ability to manipulate perception through his Shikai, which allows him to deceive opponents easily. His ultimate goal is to obtain the Hōgyoku, a powerful artifact that grants immense power. Aizen's character is marked by his calm demeanor and strategic mind, making him a formidable foe in the series.