Films: Hello Mary Lou: Prom Night 2 (1987), Prom Night 3: The Last Kiss (1990)
Location: Haunted home/Eldritch location
Height/Weight: That of an average human.
Summary: No, this has nothing to do with Alex Hammond's little rampage. Sure, the school is the same, but if that were true, then maybe they should just cancel Prom Night here forever if it keeps attracting progressively worse freaks like this.
History: Local high school alpha b*tch Mary Lou Maloney was going to be the prom queen thirty years ago, but a stink bomb-related prank resulted in her catching on fire and dying horribly. But she wouldn't stay dead for long, as a Prom Queen hopeful uncovered her old dress, which the spirit of Mary Lou occupied. Now, she's free to exact vengeance on the school and kill as she pleases.
Notable Kills: Several, such as drilling a man after impaling him with ice cream cones and throwing a football with a drill at the end.
Final Fate: Every time Mary Lou rises from the dead for whatever reason, she gets what she wants. Either the perpetrators of her demise die, or some schmuck she dated recently gets sent back to the 50s.
Powers/Abilities: Possession, warping of reality.
Scariness Factor: 4.5-At least we kind of understood Alex’s problem. Mary was already a bad egg in life, and now she's got demon powers to kill you in the craziest ways possible with a big smile on her face! It doesn't help that presumably, she's still around.
Trivia: -Originally, the first sequel was its own thing, being titled "The Haunting of Hamilton High", but it got the moniker of "Prom Night" slapped onto it in order to get more moolah out of it. The director remains completely ashamed by this studo-made decision, and threw it into discontinuity with the 1980 horror flick where it belongs.
-At the time, there was no fire stunt longer than the one that was done for Mary Lou's original demise.