Giant Magnet

The Giant Magnet is the final antagonist of Disney's 1987 animated film The Brave Little Toaster.

Why It's Junk

 * 1) It makes multiple attempts to kill Toaster and his fellow appliances, even though they are still in perfect working order and therefore not junk.
 * 2) It holds grudges and doesn't let things go, which is proven by how it destroys anything in its path just to get to the appliances despite them not being junk. This proves that it doesn't care more about anything else as long as the appliances are compacted. If it had any sense, it would have forgotten about them and gone back to collecting the stuff that actually is junk.
 * 3) In its final attempt to kill the appliances, it endangers the life of their owner, Rob, which shows that it does not care one bit if doing its job means endangering the life of a human.
 * 4) It does not receive any consequences for its actions, making it a Karma Houdini.

The Only Good Quality

 * 1) It is just doing the job it was created to do, but that's not saying much, as it is shown to be sentient and fully aware of what its doing. It is even shown to be able to control itself.