Know Any Creatures/Monsters From Mythology/Folklore With Weird Abilities Or Weaknesses?

An example of "weird powers" I'm thinking of is stuff like how the Nemean lion couldn't be harmed by mortal weapons but was capable of being damaged by itself if I am remembering right.

An example of "weird weaknesses" would be the whole deal of Kuchisake-onna, or Slit-Mouth Woman, whose whole deal was based around her showing up and asking you two questions which if you answered traditionally yes or no to would either end in her killing you or physically scarring you. She had a unique weakness being that if you answer in certain ways, such as calling her "average", or do certain things, like giving or throwing money or hard candies at her or simply saying "pomade" at her three times, you could potentially survive(though how exactly changes from time to time, as sometimes saying "Yes" to her twice genuinely will end in her sparing you and others will end with her killing you in your sleep).

I'm mainly asking because I like weird things like that and I might use some stuff like that for inspiration for weird powers for certain OC's I try to make, like a JoJo stand or HxH hatsu or something. I just wanna hear some weird stuff.