9-year-old Domenic Pace was transformed into his favorite superhero thanks to the Make-A-Wish Foundation. Iron Boy saved a reporter and defeated Ultron on the steps of the Sydney Opera House.

Domenic has cystic fibrosis but described the whole day as "awesome." He rode in a police helicopter and speed boat. Iron Boy was also joined by his brother Joseph who was dressed as Colonel Rhodes.

Tony Stark actor Robert Downey Jr. got in on the action as well by posting a video in character:

New South Wales Police Force
New South Wales Police Force
New South Wales Police Force
New South Wales Police Force

Read more at BBC.