Three vs three
Three Demon Lords were inside a castle in the center of a broken city full of fiend corpses. The sky was covered with poison clouds that originated from the energy released by powerful life forms.
One of the Demon Lords was a man with a canine head, four arms that ended in pincers, and a red shell covering his body. He was forty meters tall, and there was a huge hole in his stomach and back.
The other was a woman with pale skin, red hair, cloven hooves instead of feet, and there were three giant tails with poisonous stingers emerging from her back that extended for more than one hundred meters. One of her arms was missing, and you could tell by the wounds in her back that she used to have two more tails, but they were ripped off.