Real-life Man of Steel Luke Junior leapt into action when he spotted a criminal - by tackling the shoplifter while dressed as Superman.
Quick-thinking Luke, 24, was wearing the iconic blue and red-caped outfit during a charity fundraiser when he saw a thief running from a store.
He became a real-life hero when he grabbed the shoplifter who was being chased by staff outside a frozen food store in Sheffield.
Families cheered as he made a citizen's arrest and held on him until two police officers arrived at the scene outside the Heron Foods frozen food shop in the Steel City.
The man was arrested and taken away in cuffs - as the event's PA system played the Superman theme in the background.
Brave Luke, who hopes to be a fireman, said: 'The last thing you want to do is run straight into Superman. He was going nowhere but the police station.
'He tried to run away from the manager so I grabbed him again and he was kicking off, then I ended up physically restraining him against the window.
'The two policewomen were very professional. They didn’t even crack a smile but I can imagine they might have done when they got to the police station later that night.
'But everyone else was cheering and clapping, then the Superman music came on. I went back to the children and, as Superman would, I told them to always stay on the right side of the law.
'I got the nickname Superman after a crash crash when I was 16 or 17 and I ended up dragging two boy racers out of their car when they smashed into my friend's car.
'I'm waiting until the fire service can recruit again and then I want to save people.'
Luke, who works as a security guard at a shopping mall, was helping out at Gleadless Valley Community Action Group day on June 22 wearing a £500 Superman costume imported from Argentina.
Karen Bayliss, assistant manager at Heron Foods, said: 'We’d been watching the customer.
'A sales assistant and the manager confronted him outside. They needed some help and Superman came along.'