Without a doubt, Iron Man is the coolest in the whole superhero mob.
The Canberra father of four is on a mission to give sick kids in hospital something to smile about.
Mr Armstead's idea was born after spending many hours in the neonatal intensive care unit at the Canberra Hospital after one of his children was born two months premature.
"We did spend quite a lot of time in the hospital and saw a bit of what was going on with the other kids around the place," he said.
"The idea evolved after seeing something like this suit on the internet.