The Potato Killer is an antagonist turned anti-hero in the asdfmovie series. Like his name suggests, his role in the series is to kill the Potato character.
Death[]
In asdfmovie3, the I Like Trains Kid interrupts the event where the potato killer tries to step on the potato. The potato killer and the potato are hit by a train.
He was revived for The Muffin Song in 2018.