10 Best Family Guy Characters Only In One Episode

When Brian points out that Stewie is losing his evil streak, he immediately builds a machine in an attempt to boost his malevolent desires. It seemingly doesn't work, and Stewie abandons the idea. As he leaves the room, a burst of smoke from the machine reveals a clone made up of these very desires: Evil Stewie.

The red-shirted, yellow-dungareed terror wastes no time in demonstrating his evilness, cutting off Brian's tail and attempting to choke him with his own collar. By the time Stewie discovers him, Evil Stewie has already escaped - by way of cutting a woman in half and stealing her car.

They hatch a plan to catch him, involving Brian tied up in the park as live bait. Evil Stewie takes the bait, and the two babies clash in a violent showdown. In the struggle, they end up losing the shirts that distinguish them from one another, and when Brian grabs hold of a gun, the old film trope of 'which one do I shoot?' comes into play.

As a nod to an earlier joke, Brian tells both Stewies to look at their feet. One of them bursts out laughing, prompting Brian to shoot the other one. Stewie congratulates Brian on making the right choice, and as they walk away, he turns around to the camera, revealing animalistic eyes and laughter in the background mimicking the music video for Michael Jackson's Thriller.

So, is Evil Stewie dead, or is he simply biding his time? Perhaps we'll never know...