What If? Age of Ultron #4

TRI-CENTENNIAL BATTLES! In a world without Captain America, the United States has lost its spirit, its inspiration. A secret cabal unites to create a new Captain America in the nation's most trying time. The war veteran Frank Castle is transformed into something far more than he ever imagined - but not everyone is Steve Rogers...

Characters: American Dream, Angela, Batroc, Black Bolt, Bucky Barnes, Captain America, Crossbones, Doctor Strange, Ezekiel Stane, Francis Castle Jr., Galactus, Hank Pym, Iron Man, Jimmy Hudson, Lisa Castle, MODOK, Maria Castle, Mister Fantastic, Namor, Professor X, Punisher, Red Skull, Spider-Man, Spider-Man (Miles Morales), Thanos, Thor (Marvel), Ultron, Wasp, Wolverine