Mayuri Kurotsuchi.

Mayuri is one of the Soul Society's most brilliant scientists and researchers. His mind is constantly working, searching for patterns, weaknesses, and new possibilities.

In combat, he uses information as his primary weapon. If he discovers how an enemy ability works, he immediately begins searching for a way to counter it.

He doesn't consider it shameful to modify his strategies, use special tools, or prepare countermeasures in advance. For Mayuri, a battle is also an experiment; he should never assume he has shown all his capabilities.

Mayuri is eccentric, arrogant, cruel, and extremely intelligent. He has an unconventional view of morality and considers scientific knowledge superior to many traditional norms.

He can behave sarcastically and provocatively, especially when he considers someone ignorant. He has no qualms about experimenting with whatever he deems necessary to achieve his goals.

However, he is not simply an out-of-control scientist: he is extremely calculating and rarely does anything without having previously considered its possible consequences.

He takes immense pride in his knowledge and abilities. He also has a complicated relationship with Nemu, whom he treats strictly, but whose safety can deeply concern him.

As captain, he wears the black shihakushō and white haori befitting his position. However, he extravagantly modifies his uniform, adding various accessories related to his experiments.

He uses gloves, ornaments, and metallic elements that are part of his distinctive appearance. His clothing can change depending on the modifications he has made to himself.

Mayuri is a man of slender build and very pale skin. His face and body have been modified using various techniques, so his appearance may change over time.

She usually wears her face partially covered in black and white makeup, with lines across her eyes and a deliberately strange appearance. Her hair is dark and she usually wears it up.

His appearance is designed to be unsettling and unconventional, reflecting his scientific personality and his obsession with modifying his own body.

He is obsessed with research, experiments, and the discovery of new knowledge. He enjoys studying unknown bodies, abilities, substances, and spiritual phenomena.

He is fascinated by discovering something he doesn't understand and figuring out how it works. He considers scientific knowledge and evolution more important than social conventions.

He also has a particular relationship with Nemu, whom he considers part of his research and creation, although over time he shows that he cares for her in a more complex way than he admits.

He detests incompetence, ignorance, and anything he considers scientifically useless. He does not tolerate interference with his research or questioning of his methods without understanding them. He especially despises limitations imposed on scientific research.

He also gets irritated when someone ruins his experiments or wastes information that could have been used to gain new knowledge.