The Crimson. A macabre and bloody evil biome that has been attempting to spread across Terraria with the goal of balancing the world... and it has no problem bringing its disgusting creatures with it.
You were within a cavern underground in the Crimson, with rough, red Crimstone all around you. If the occasional pile of blood, guts and eyeballs laying around wasn't enough to gross you out, the creatures of the Crimson sure did! From bloody spiders to zombie-like beings that floated around with a sack at their bottoms... everything was just vile.
But suddenly, as you were walking around, you suddenly heard a stream of liquid burst, and felt it hit your back! While not pushing you much, it sort of felt your back had been... weakened. Taking some of the stained liquid, you saw it was yellow... and smelt horrible!
Looking back and around, you soon saw something when you glanced upwards: a being floating in the air, looking down at you! Their lower half made up of 6 tentacles, while their upper half being weirdly more humanly, though with pink skin and pink hair, with some sort of fleshy hood! Most notably however, they seemed to have the same liquid... inside of them!
Chrima: scoffs Nosy explorers like you really want to try and see everything, don't you?