Mob that you could choose it in the minecom vote 2019, is described as a type of fire.
Their body parts look like shields and are used to defend against attacks.
This mob spawns from random groups of flames and attacks the player in the Nether with its dangerous shockwave attack.

But recently the developers of Minecraft Dungeons said that they were probably going to add it.
But if nothing is known yet about what its appearance would look like...
For now I just made a small version about what the mob can look like .

I hope you like it and enjoy the skin :D