A New Jersey boy shows off his transforming Optimus Prime costume. Screenshot: Good Morning America/YouTube
Asuncion said it took about six hours to build the costume, which proved to be a big hit with Lawson.
"He loves it," Asuncion told ABC News. "I had to tell him that I was still working on it so he'd take it off, and he wanted to sleep while wearing it!"
He said the boy asked him to design and build his Halloween costume after seeing the dad-sized outfit he created for New York Comic Con.
"Even before completion, he walked around in just the cloth costume with me and said, 'We're going to be the coolest ever, right, daddy?'" the father said.
