Robert Downey Jr surprised a kid with a real bionic arm

Famous Hollywood star, known for his complicated past, Robert Downey Jr. became a real life hero.

Alex is a young boy that doesn’t have most of his arm. The actor appeared to him, within the Collective Project, to bring a bionic arm, a real one, built with the use of a 3D printer, without any costs to the youngster family. Alex was really calm and composed with such a huge surprise!