The dark creature's purpose in coming to the realms was they wanted to absorb the power of the beasts of the shadow realm that had been hiding for a long time. Other creatures like elves, fae, or werewolves, the dark creature gave no care at all.
They only desire to consume creatures with dark attributes. If the Lord of the darkness weren't a vampire, they would also appear in the Eternal Empire, considering that all vampires had the dark attribute.
However, they would not hesitate to prey on them if they met beings other than those from the shadow realm with dark attributes.
For example, like this Xavier. They didn't know who Xavier was or his background. All they knew was that Xavier had pure dark energy and was especially strong. If one absorbed all of his strength, they couldn't imagine how much of an increase in power they would experience.
