Just as Project Runway has Models of the Runway, so too Project: Rooftop has spin-offs. Now there’s features like: “All Ages All-Stars,” redesigning superheroes for all ages (for example, Martian Manhunter); “How It’s Done,”  spotlighting official superhero redesigns (like the Iron Man briefcase armor); and “Retrofix,” giving Golden and Silver age comic characters a new look.