Natural Killer Saibou

Clad in a black vest and wielding a curved blade, this female lymphocyte stands as one of the most self-reliant agents in the innate immune arsenal. Unlike adaptive immune cells, she requires no antigen presentation to identify and destroy cancer cells or virus-infected targets — her instincts alone guide the strike. Her combat effectiveness is directly tied to her emotional state: unleashing a hearty laugh supercharges her power, while excessive stress leaves her dangerously weakened. Her unilateral, rule-bending approach frequently puts her at odds with Killer T Cell.