The steps of the monster were growing closer and closer, if one listened closely they could hear it was limping slightly. As it rounded the corner a giant beast approached. It was vaugely like a dog but at least 10x times the size, even describing the beast was hard because there was a mix of many different creatures. It was recognizable as only one thing, a chaos monster. These creatures fed on negative energy, it made them stronger. However it was clear the monster was in pain, it was missing a wing and purple blood was oozing out of various cuts, splashing onto the floor where it sizzled signifying its high acidity. Due to the infighting and hatred among the team these wounds were beginning to heal. It opened its mouth and a terrible screeching noise came out, whether this was because the creature was in pain or enraged was unclear.

(Here's an image of what I had in mind for the creature but it's totally up to your interpretation)
[img]https://s-media-cache-ak0.pinimg.com/236x/16/15/6a/16156a2e6a7c3e2346f9918b56cd3150.jpg[/img]