Speaking to IGN, the actor explained that the show's first few episodes will cover his character's origins as a masked crime-fighter.
"This [show] is the genesis of a superhero." he revealed. "It's about a guy that is framed for a crime he doesn't commit and is forced to go underground. He's presumed dead and in order to reunite himself with his family and particularly his son, he takes the persona of a superhero from a comic book he used to read his child."
Lyons described the experience of filming the show as "surreal" but admitted that he had never dreamed of being a real-life superhero as a child.
"I always thought I was going to be a firefighter. I'm not the kid that wanted to be the superhero, I'm the kid who got to be one. It's kind of weird!"
It was previously announced that Vinnie Jones had been cast as the show's villain.
The Cape - which also stars former Sarah Connor Chronicles actress Summer Glau - is expected to air on NBC during the 2010–2011 television season as a midseason replacement.