Issue: #1
From the pages of CIVIL WAR: FRONT LINE and THUNDERBOLTS! Once he was a hero, now only a shell of Robbie Baldwin remains. As Penance, he begins a slow descent into madness: the most hated man in America, blamed for the disaster at Stamford, tortured by visions of his failure and obsessed with strange, seemingly meaningless numbers. A relentless pursuit begins!Collects Penance: Relentless #1-5.
Creators: Dan Buckley, Joe Quesada, Rain Beredo, Joe Caramagna, Tom Brevoort, Paul Jenkins, Rich Ginter, Paul Gulacy, Molly Lazer, Brad Johansen
Characters: Iron Man, Doctor Doom, Norman Osborn, Scorpion, Venom, Wolverine, Human Torch, Invisible Woman, Mister Fantastic, Thing, Bullseye, Moonstone, Andreas von Strucker, Radioactive Man, Songbird, Man-Eater, Professor Mendel Stromm, Speedball, Fin, Nitro