10 Comic Book Heroes Taken Down In Just One Hit!

10. Guy Gardner

Following the events of DC's classic Crisis On Infinite Earths, the former Justice League of America expands its membership to include heroes from around the world, becoming Justice League International. One of the new members is Guy Gardner, Earth's second Green Lantern, who had been recruited into the Green Lantern Corps during the Crisis.

Gardner - arrogant and overconfident about his new abilities - almost immediately alienates his teammates, and regularly clashes with Batman, the League's leader at the time. The simmering tension between the two boils over in Justice League International #5, when Gardner challenges Batman to a fight for leadership of the team.

Batman responds by knocking out Gardner with just one punch, then leaves the room, leaving Guy in the care of their delighted teammates. In a further blow to the Green Lantern's ego, when Batman does leave the team, he passes leadership to Martian Manhunter.

Batman's One Punch - sometimes referred to as 'The slap heard 'round the world' by fans - remains one of the most iconic moments DC history. Don't feel too bad for poor Guy, though. In a future timeline, he scores his own one punch knock-out on an unfortunate alien known as Bolphunga the Unrelenting.