When Sydney, Australia needed a hero, the city turned to Domenic, a nine-year-old with cystic fibrosis who just happens to be Iron Man's apprentice, Iron Boy.

OUR APP'S SUPER POWER IS DELIVERING GOOD NEWS—>  Download FREE for Android and iOS

With the evil robot, Ultron, threatening Sydney, and his henchmen taking a reporter hostage, the police commissioner of New South Wales had one option–he called on Iron Boy for help.

With help from the Make-a-Wish Foundation which helps sick children fulfill their dreams, a police helicopter picked up Domenic from a playground and, once in his armor, Iron Boy sped around the city by speedboat and police cruiser, rescuing the hostage, defeating the henchmen and meeting Ultron for a final showdown in front of a crowd of cheering citizens.

Afterwards, Commissioner Andrew Scipione presented Domenic with the medal of valor and maybe even better, the real Tony Stark (actor Robert Downey, Jr.) sent him a video message announcing Domenic was now an "Honorary Avenger."

(WATCH the video from News 7 below and SEE the Robert Downey, Jr's message at the bottom) — Photos: News 7

A dream come true for an ill boy: Iron Man's apprentice was called in to help the police #IronBoyAU https://t.co/1te1kkaN9J

— 7 News Melbourne (@7NewsMelbourne) February 11, 2016

A dream come true for an ill boy: Iron Man's apprentice was called in to help the police #IronBoyAU https://t.co/1te1kkaN9J

Robert Downey, Jr. message:

A special message from Tony Stark

We didn't think today could get any better for our newest Super Hero #IronBoyAU, But then he received this amazing message:

Posted by Make-A-Wish Australia on Wednesday, February 10, 2016

We didn't think today could get any better for our newest Super Hero #IronBoyAU, But then he received this amazing message:

Be A Hero, Share This With Your Friends…