Warning! This post contains SPOILERS for Superman: Welcome To MetropolisJames Gunn’s Superman is right around the corner, but the official prequel has already been released. Featuring some major firsts for the DCU’s new Man of Steel and his iconic city, Superman: Welcome To Metropolis is surprisingly full of some exciting reveals, despite being a short 144-page junior novel. Preceding Superman’s events by a few years, it’s fascinating to learn more about the world we’ll soon be entering on the big screen.