Flatiron

Flatiron is a Marvel creation who made their entrance in 2000 courtesy of the legendary team of Roger Stern and John Byrne — the same duo behind some of the most celebrated runs in the House of Ideas' history. Debuting in Marvel: The Lost Generation #12, a series dedicated to unearthing heroes who operated in the gaps of Marvel's sprawling continuity, Flatiron occupies a genuinely fascinating corner of the Modern Age: characters whose stories were always there, just waiting to be told. With that debut issue carrying collector-significant key status and a place in the Official Handbook of the Marvel Universe: Teams 2005, Flatiron shares their world with an intriguing cast including Black Fox, Positron, and Pixie. Rare appearances make this one a rewarding discovery for dedicated Marvel completists who love digging into the publisher's hidden history.