I, Robot, Now Pronounce You Husband and Wife

Almost everyone stood when the bride walked down the aisle in her white gown, but not the wedding conductor, because she was bolted to her chair. The nuptials at this ceremony were led by "I-Fairy," a 4-foot-tall seated robot with flashing eyes and plastic pigtails. Today's wedding was the first time a marriage had been led by a robot, according to manufacturer Kokoro Co. "Please lift the bride's veil," the robot said in a tinny voice, waving its arms in the air as the newlyweds kissed in front of about 50 guests

The I-Fairy wore a wreath of flowers and directed a rooftop ceremony. Wires led out from beneath it to a black curtain a few feet away, where a man crouched and clicked commands into a computer. Japanese companies are making a push to inject robots into everyday life—including weddings. Kokoro, whose corporate goal is to "touch the hearts of the people," also makes giant dinosaur robots for exhibitions and lifelike android models that can smile and laugh.