Ichigo Kurosaki defeats Aizen in Bleach. After undergoing intense training and achieving a new level of power, Ichigo is able to overpower Aizen and ultimately defeat him in battle. Aizen, who had been a major antagonist throughout the series, is finally defeated by Ichigo's determination and strength. **

It is difficult to determine a clear winner between Aizen and Goku as they are from different universes and have different abilities. Aizen is a powerful and manipulative villain from the Bleach series, while Goku is the main protagonist of the Dragon Ball series and is known for his incredible strength and fighting abilities. Ultimately, the outcome of a battle between the two would depend on the specific circumstances and the rules of engagement. Both characters have their own unique strengths and weaknesses, making it challenging to predict the result of a hypothetical fight between them. **

It is difficult to determine a clear winner between Aizen and Meliodas as they both possess immense power and abilities. Aizen is a master manipulator with powerful illusions and high intelligence, while Meliodas is the leader of the Seven Deadly Sins with incredible strength and magical abilities. Ultimately, the outcome of a battle between them would depend on various factors such as strategy, circumstances, and the extent of their powers at that moment. **

It is difficult to definitively say who would win in a fight between Aizen and Kenpachi as both characters are incredibly powerful in their own right. Aizen possesses immense intelligence, cunning, and powerful illusions through his Zanpakuto, while Kenpachi is known for his raw strength, combat skills, and relentless fighting spirit. Ultimately, the outcome of their battle would likely depend on various factors such as strategy, tactics, and the element of surprise. **

It is difficult to determine a clear winner between Madara and Aizen as they are both incredibly powerful characters from different anime series (Naruto and Bleach, respectively). Both characters possess immense strength, intelligence, and unique abilities that make them formidable opponents. Ultimately, the outcome of a battle between Madara and Aizen would depend on various factors such as their strategies, the environment, and the specific circumstances of the fight. It would be an intense and unpredictable battle with no clear winner. **

Aizen wanted Ichigo's unique and powerful spiritual energy, known as reiatsu, in order to further his own plans for world domination. Aizen believed that by harnessing Ichigo's reiatsu, he could achieve his goal of transcending the limitations of a Soul Reaper and become an even more powerful being. Aizen saw Ichigo as a valuable asset and sought to manipulate him in order to achieve his own ambitions. **

It is difficult to determine a clear winner between Son Goku and Aizen as they are characters from different anime series with unique abilities. Son Goku is known for his incredible strength, speed, and fighting skills, while Aizen possesses powerful illusions and manipulation abilities. Ultimately, the outcome of a battle between them would depend on various factors such as the circumstances of the fight and how each character utilizes their strengths and weaknesses. **

Aizen betrays the Soul Society because he believes that the current system is flawed and that he is the only one capable of creating a better world. He seeks to overthrow the existing order and establish himself as the ultimate power. Aizen's lust for power and desire to manipulate others ultimately drive him to betray the Soul Society and pursue his own ambitions. **