Got an interesting take on eldritch horror for all you writers out there. It's a bit of a roundabout schlep to reach the actual idea, but writers tend to be readers so I hold you'll stick with me til we get there.
So, consider a 2D creature. Little flat dude, living on the ground. No concept of "up" or "down." He's 2D, he just doesn't parse the concepts and can't perceive them anyways.
He sees you. What he actually sees is just the 2D cross section of you where you intersect with his 2D world, which is probably your footprints. So, as far as he can tell, you are a pair of footprints that are.... apparently one being? He doesn't get how it works exactly, but it's not too far out there, so he just kind of accepts that, yes, humans are The Two That Are One. Spooky. They always seem to use the singular to refer to the pair of themselves, and only differentiate between themselves as Left or Right. But other paired instances of The Two That Are One are, in fact, separate entities. So they're only in sets of two, unless accompanied by a companion called "Cane," which they are sometimes, or even a pair of companions called "Crutches." When Crutches are present, sometimes one of The Two That Are One will be missing entirely. It's a little confusing.
But wait, what now? They disappear and reappear in sequence, teleporting in turns. He never sees them just move like a 2D being, always the stop-start teleporting. Apparently this strange power is called "walking," and its accomplished by The Two That Are One moving through an unseen dimension called "Up," through a process called "lifting" themselves and re-entering the real world farther away in the direction they wanted to go. He can accept the idea of unseen dimensions, and he vaguely gets the idea that one of The Two That Are One must remain anchored in the real world to prevent something called "falling," which is some kind of uncontrolled movement through the unperceivable dimension of "Down." Which is the same dimension as "Up," but...... backwards? Reversed? He's not really clear, but "Falling Down" is presumably bad, so The Two That Are One keep one of themselves here in the real world to prevent it.
Except if they do something called "jumping." Which consists of gathering up their power to hurl themselves through the Up dimension together to reappear together somewhere else in the real world. He isn't sure why they Walk instead of Jump, since it seems better to take both of The Two That Are One together at the same time, but okay.
Okay, what the hell, they can Walk through impenetrable barriers like the great wall of Sidewalk Chalk? How do they go through that? What? They went "Over?" The hell is "Over?" Like 'around' but through the unseen dimension of Up? But they couldn't Walk through the barrier of Wall. Why could they go "Over" Sidewalk Chalk but not Wall?
And they can't go between the four small obstacles of Refrigerator Feet. The area between them is safe from The Two That Are One, for the four Refrigerator Feet are connected to each other in the strange and eldritch dimension of Up. The barriers are too powerful to be moved by The Two That Are One, and it (they?) cannot enter the real world where it is blocked by such powerful forces.
Okay, now consider a 4 dimensional elder god and how we 3D entities would perceive them.
