10 Sci-Fi Movie Villains Who Encountered Something Worse

In Men in Black II, Jeff is a freakin' gigantic alien worm which happens to reside in New York City's subway system, because why the hell not?

Agents J (Will Smith) and K (Tommy Lee Jones) first encounter Jeff at the very start of the movie, and he reappears during the final battle, when J and K are pursued by the villainous alien Serleena (Lara Flynn Boyle).

The spaceship chase leads down into the subway, where Serleena fails to see Jeff parked at the end of the tunnel, causing her to fly directly into his gaping maw, seemingly being devoured. Except, a few minutes later, Serleena re-emerges, having absorbed Jeff and taken his form as she stages one final stand against the heroes, who finally put her down with some well-placed blaster shots.

Jeff quite understandably assumed that this dainty-looking woman couldn't do him any harm, but he evidently didn't count on her being an ultra-powerful alien monstrosity herself.