10 Famous Movie Villains With Lame Motivations
7. Lori (Happy Death Day)
The Motivation: Tree was having an affair with a man she liked.
In the original Happy Death Day, protagonist Tree Gelbman somehow ends up living through the same exact day over and over, and each night, she's killed by a knife-wielding maniac wearing a baby mask. The movie follows Tree as she attempts to crack the mystery of her nightly murder: who's beneath the mask, and why are they doing it?
Eventually, we learn that her housemate and fellow sorority member Lori is the one responsible, which leads to Tree killing her "friend" in self-defence. Lori's evil turn comes out of nowhere (which is kinda the point, since it's meant to be a big twist), so we don't get enough time to properly understand her motivation, but even worse, said motivation is quite a feeble excuse to brutally knife Tree without displaying a shred of mercy, with Lori overreacting to a ridiculous degree.
It's revealed that she's only trying to kill Tree because they both fancy the same man: Gregory Butler, a professor at their university. Lori grew jealous upon discovering that Tree was seeing Butler, so she decided to kill Tree to get her out of the way. Disproportionate revenge, much?