Captain America and Iron Man #634

Captain America and Iron Man stand back-to-back at the center of this 2012 Marvel cover, shield raised and repulsor blazing, as a quartet of costumed adversaries — including a dual-sword-wielding figure in green, a powerful bruiser in purple, a blond cyborg-armed fighter, and a hooked-weapon-carrying combatant — close in from all sides. Kalman Andrasofszky's crisp cover art frames the duo as outnumbered but absolutely unintimidated, giving the issue an energetic sense of mounting odds. With Cullen Bunn writing and Barry Kitson on interior art, this team-up series continues to make a strong case for pairing Marvel's star-spangled soldier with its armored futurist.