Halloween // How to make a Lovecraftian (cosmically horrifying) Monster Costume?

"Lovecraftian horror, sometimes used interchangeably with "cosmic horror"[2] is a subgenre of horror fiction and weird fiction that emphasizes the horror of the unknowable and incomprehensible[3] more than gore or other elements of shock.[4] It is named after American author H. P. Lovecraft (1890–1937). His work emphasizes themes of cosmic dread, forbidden and dangerous knowledge, madness, non-human influences on humanity, religion and superstition, fate and inevitability, and the risks associated with scientific discoveries,[5] which are now associated with Lovecraftian horror as a subgenre.[6] The cosmic themes of Lovecraftian horror can also be found in other media, notably horror film, horror games and comics."

Source: https://en.wikipedia.org/wiki/Lovecraftian_horror

Given that it is often really hard to portray a being of this sort visually, one can imagine how hard it could be to make a Halloween costume based on this concept, especially without the context of the story it may come from. The one thing that comes to mind that would be scary in that sense and most would understand would be a biblically accurate angel, which, although it was not intended to be a Lovecraftian monster, does give off that vibe.

In case you yourself have already pulled it off or have any advice/ideas, it will be appreciated if you share them.