Theres been a few symbols or creatures I’ve witnessed in more than one dream.

First, the symbole of a crecent moon, facing down and to the left with a cross from one point almost touching the next with the main beam.

Second, a 1-2 foot human looking demon, this was a when it first started happening.

Third, and most prominant, is a humanoid scorpion.
it had the body of a scorpion, tail, no claw pinchers. From where its head would be comes the torso of a human. Its left arm on the shoulder, was what looked to be a shield, same color as it looking to be part of it. Its right arm came to a point like a sword.