At just under one and a half inches tall—about the height of a LEGO minifigure—Zippy is the world’s smallest self-powered ...

Zippy, the smallest autonomous bipedal robot ever, walks at 10 leg lengths per second and fits into spaces other robots can’t ...

At less than one and a half inches tall, roughly the same height as a LEGO minifigure, the world's smallest self-contained ...