Introducing the Marvel Universe in a way you've NEVER experienced before! Welcome to SUPER HERO CITY, a crowded capital of classy crusaders and crafty criminals in a crammed collective, and home of the SUPER HERO SQUAD! Take a stroll down to the Xavier Institute, past the FF's Baxter Building...but don't stray too far, because dastardly DOCTOR DOOM's domain is the next block over...! Collecting MARVEL SUPER HERO SQUAD: HERO UP! and the comic strips seen exclusively on MARVELKIDS.COM.