What 1960s toy featured two plastic fighters controlled by buttons, trying to knock each other’s heads off?

Rock ’Em Sock ’Em Robots is the answer. Introduced in the 1960s by the Marx toy company, Rock ’Em Sock ’Em Robots is a tabletop boxing toy with button-controlled plastic fighters, the Red Rocker and the Blue Bomber, whose spring-loaded heads pop up when a player lands the right punch.

Red Rocker and Blue Bomber

The two robot boxers are commonly known as the Red Rocker and the Blue Bomber. Their color-coded design gave each player a clear fighter to control, making the toy easy to understand before play even began. The boxing-ring setup also made the action feel immediate, with both players facing each other in a simple head-to-head contest.

How the Head-Popping Mechanism Worked

Players use button or lever-style controls to make the robots punch at each other. A well-placed hit triggers the opponent’s spring-loaded head to pop up, creating the toy’s signature “knock his block off” effect. The heads do not need to fly off completely for the gag to work, since the visible pop-up motion shows instantly who landed the winning hit.

The Marx Boxing Toy That Stood Out

Rock ’Em Sock ’Em Robots stood apart from many traditional board games because it did not rely on cards, dice, turns, or a long rule set. Its appeal came from physical action, quick competition, and an obvious visual result. Advertising and package language helped connect the toy to the “knock his block off” idea, making the head-popping feature the center of its identity.