Who's the most useless character ever seen in a movie?

Like the title says.

It might be a character who adds nothing to the story, one who is just there to be saved, one that is only there to add drama and is never seen again, one that only exists to support a bad joke, one that is only there for some pointless fan service...

Use your own criteria and let us know which character(s) you think were just useless to the overall movie and its plot.