The limit of the Willing Suspension of Disbelief for a given element is directly proportional to its creepiness.
Some tropes are often used for the purpose of making a character unlikable by making them come across as creepy. Many other tropes can also be shoehorned in for the job. Often, a plot element exist solely for the purpose of putting a giant red flag on a certain character: "Hey! This guy is creepy". Never mind whether or not the situation is psychologically, socially or even physically realistic. As long as it fills its function of highlighting the guy as creepy, disbelief will be willingly suspended—or at least that's how it's intended. Parts of the audience may react differently.
While usually used against a single male character, it can also be used against female characters and against groups of people. Including entire races.
Contrast Rule of Cool and all the others. Do not confuse with Rule of Scary.
Some tropes that work well for this purpose (when played in a creepy way) are:
- Activist-Fundamentalist Antics
- Boomerang Bigot
- Bondage Is Bad
- Bread, Eggs, Milk, Squick
- Creepy Cave
- Creepy Child
- Creepy Doll
- Creepy Good
- Creepy Monotone
- Creepy Physical
- Creepy Twins
- Creepy Uncle
- Depraved Bisexual
- Depraved hom*osexual
- Destructive Romance
- Eerily Out-of-Place Object
- Giggling Villain
- Orderlies are Creeps
- Parental Incest
- Pedophile Priest
- Pervert Dad
- Squick
- Stalker Shrine
- Stalker with a Crush
- Taxidermy Is Creepy
- Troubling Unchildlike Behaviour
- Unsexy sad*st
- Unnecessarily Creepy Robot
- Villainous Crush
- Villainous Incest
- Wife Husbandry
- Your Normal Is Our Taboo