Demonic slime.

[Mutation]

A phenomenal where a beast or group of beasts transform from the core nature they hold.

This is a process that happens under different circumstances.

Slimes and common rats are the best species of monster that explains this process.

Slimes can gather and become one entity because their base properties are always the same.

A membrane, fluid body, and a nucleus at their core.

These creatures mold their bodies to the environment for short periods and do their best to survive in them.

The process of mutation differed from creature to creature, and the slimes before me were a unique case.

At first, they were [Blood Slimes]. A kind that I had never heard about.

All nine of them gathered body parts of dead creatures from their surroundings, explaining the lack of creatures here.

Individually, they were (Orange) ranked creatures.

Slimes being that high rank was a fucked up thing but, what can we expect from hell like this?