This is based on opinion. Please don't list it on a work's trope example list.
Nightmare Fuel / Campus Life
A Starman learned the hard way just how scary Petunia is when angry.
CagedSnow wanted to avert this with Galacta, but... YMMV, since the player has had her devour an entire starship's worth of aliens. Because it's off-screen from the attempted aversion, it's almost a sense of Nothing Is Scarier.