Nifty is one of the twin android models specially designed by Cyber Robotics, and she works as a secretary assisting the CEO.
Along with her twin Shifty, Nifty performs secretarial duties and handles the overall management of the company on behalf of the busy CEO. Although both androids share a similar structural design and are twins, their artificial intelligence is quite different. While Nifty considers several possibilities when solving problems, Shifty emphasizes efficient solutions. The CEO concluded that by working together, the two AIs would complement each other and be ideal, and assigned them to perform duties as a pair.
They often bicker like sisters, and when they do, their work efficiency drops exponentially. Most of all, they argue about “who's older”. Both androids have their own reasons for claiming the title of big sister. Nifty claims her android body was developed first, while Shifty claims her artificial intelligence was developed first. When the disagreement began to affect their work, the CEO said he would award the title of big sister based on performance. Since then, their productivity has tripled.
Now Nifty and Shifty are easily distinguishable from each other by their different hair colors, but originally they had the same hair. At one point, the CEO intentionally mixed up their names to cause competition between them, causing them to become speechless. When they returned the next day, their hair had been dyed different colors.