The AI assistant known as Hacka Doll #3 is one of the three primary programs designed to enhance user capabilities. Despite being skilled in this area, he struggles with laziness and a love for otaku culture that often leads him to prioritize playing portable games over actual work. He is referred to as "No. 3-chan" by others but his official profile identifies him as a trap. While Hacka Doll #3's default attire is gender-neutral, he frequently adopts female outfits in an attempt to further advance his customers.