Role in film
He is the antagonist of the final antagonist featured in the film. He appears near the end of the film, when the main characters are sent to Ernie's Disposal, an automotive junkyard. During the song "Worthless", the Giant Magnet mercilessly kills no fewer than nine wrecked cars, except a bus, picking them up and dropping them onto a conveyor belt leading to a machine which crushes them into tiny cubes while the appliances try to find cover from him. Unlike the wrecked cars, he doesn't have a sad expression; in fact, he has a mad one.
Being a cold and uncaring machine created to destroy, the Giant Magnet shows no sympathy for his victims and has no regrets about killing them. Although the Magnet is simply performing its job, like Elmo St. Peters, to destroy the cars, it later becomes a true villain, deliberately going after the appliances and picking up every object they hide under. When the Master arrives at Ernie's Disposal to retrieve his appliances, he grabs onto them just as the Magnet picks them up, being lifted into the air and dropped onto the conveyor belt along with them. As they are about to be killed by the crusher, Toaster jumps into the workings of the machine, using his own body to jam its gears. Crusher is disabled just in time, and the Toaster is repaired by the Master.