In April 2015, Japan's Mitsubishi UFJ Financial Group will welcome a new kind of employee - a humanoid robot called Nao. The bank's first non-human hire that stands 58-centimeters (22.8 inches) tall and weighs a mere 5.4 kilograms (12.7 pounds), is the brainchild of France's Aldebaran Robotics - a subsidiary of Japan's Softbank.