Bleach became one of the most popular Shonen anime of all time because of its power systems and battle sequences. It also helps that it features plenty of decently written characters who all have unique designs. Like most successful series, Bleach does a good job with its villains. Some villains play the sadistic and power-hungry role perfectly, while others are more complicated.
Source：https://www.cbr.com/bleach-villains-birthdays/
