Rin

Information
Rin is Pet Slime of an Unknown Hero.

Appearance
It was... a pitch-black wolf. But his whole body was definitely black, the sole exception being his crimson eyes. It’s not that his pupils were red. Rather, it was like red balls had been put directly into his eye sockets.

Personality
Rin is a slime, but extremely powerful. They are stronger as a lower level Hero. They don't surrender anyone, but who is stronger than her. They consider Uuma and Alca companions since they died for her as food. They can eat everything.

Volume 4
While Keima was sleeping, Rokuko woke him up, because of an unknown invader of the dungeon. The invade was in fact a wolf monster, which was so strong it ripped a C-rank party to shreds. It decided to sleep in the Core Room which was enough warm for them to hibernate. While they were there, Goren was in a panic. They issued an extermination quest which was answered by a B-rank adventurer, Alca, who is the High Priestess of the Church of Lux. After she died several times because of Rin, the Slime decided to let her join her pack. After Alca asked them to destroy the Dungeon Core they attempted to do so. However, they were intercepted by 'Uuma'. After Alca died one last time, Rin was pressured to live in the dungeon until Spring.