Ensō

The Ensō (円相) are a group of Humans that have gained unique abilities by converting their soul into "perfection", though the processes called they call "Enlightenment". Kurokami Shima stated that are closer to the Bounts than any other race. Sano Mikoto was the First to become an Ensō, and the strongest to date. They have a creed of protecting Humans, from the forces that could harm them. This includes Hollows, Shinigami, Togabito, and sometimes Quincy and Fullbringers.

Powers & Abilities
Spiritual Awareness:Most of the Humans chosen to become Ensō, have some form of Spiritual Awareness. This awareness is greatly increased after becoming an Ensō.

Consumption: While mostly done by the Mu, an Ensō is also capable of consuming the body of other creatures. In doing so, the Ensō is capable of gaining the abilities of that they consumed. Most Ensō are only capable of consuming one type of creature, this is usually determined by what the Mu first consumed after its birth. Though they are able to consume all types of creatures, they do not consume humans. This is due to their creed of "Protecting Human from the Evil of the Other World".

Enhanced Strength: After undergoing the "Enlightenment", most of the Ensō possess great strength. Though each of them, have a different level of strength then the next. Sano stated, the greater the willpower during the process the stronger they become.

Johakyū: Is a form of foot movement used by the Ensō, It allows for high speed movements by manipulating the flow of energy along a path.

Shibui:

Miyabi:

Mu
Ensō, being created in a similar way of Bounts, have similar powers to the Bounts and Quincy. The foremost of these powers is the Ensō Mu, a familiar equivalent to a their doll. Like a doll a Mu is its creator's power given physical form. However unlike a doll, a Mu's personality is often the opposite of its creator's. And is often considered to be the owners other personality given form.

Unlike the Doll, most of the Mu's takes the form of objects, with the exception of Abel's and Yōhime's which takes to from of a wolf an a small angel. Like the dolls and Zanpakutō, each Mu is sealed in a unique form and is released in a different way. Kurokami stated that the Mu's closely similar to that of the Bakkōtō. In the sense that they able to grow stronger by using the owner's reiatsu, as well as consuming the body and power of others. Like the Quincy, of a Hollow or a Shinigami is killed or consumed by a Mu. Their soul is completely destroyed.

Trivia

 * The term Ensō (円相) means s a Japanese word meaning "circle" and a concept strongly associated with Zen. Ensō is one of the most common subjects of Japanese calligraphy even though it is a symbol and not a character. It symbolizes absolute enlightenment, strength, elegance, the universe, and the void; it can also symbolize the Japanese aesthetic itself.