An amateur roboticist built a Scarlett Johansson robot using hardware store supplies

Ricky Ma just turned 43, but his obsession with robots took root 35 years ago when he fell in love with a Japanese cartoon. Called Plawres Sanshiro, the story followed a boy who has his robot fight in robot battle tournaments. Ma desperately wanted to build his own robot, and started tinkering with basic motors while still in grade school.