Ask Minecraft Safety Inspector!

Unlethe is the goddess of the Void. She is the Void, technically speaking. There's no difference between the goddess and the place. But usually if you're taking about the diety, you call her Unlethe. If you're talking about the empty space between dimensions, you call it the Void.

She doesn't tolerate any physical matter in her domain, which means if you tried going into the Void directly, you would die because your body would no longer exist. She's not considered evil, per se, since she isn't interested in going out of her way to harm humans. Intruding on her space isn't really something you can do by accident, bedrock is hard to break. And she does allow people to cross the Void, with Nether Portals. But I can't really think of anyone who is comfortable with an infinite nothingness, even one that wants to stay as far away from you as possible. So she isn't widely worshiped.

I can't remember the original context in which I mentioned her. But it was probably regarding End Portals, and why nobody in my universe can travel to The End. It seems that Gears has charged her with guarding them and preventing humans from using them. She hasn't been very forthcoming about why that is (can't imagine why, who doesn't love answering the same questions over and over again?) but if you do manage to get her to talk to you, she'll say something like "humans aren't ready," whatever that means.

I'm not that much of an architect, unfortunately 😅. I didn't inherit my dad's design skills, though I can appreciate a lovely building. But four to five blocks sounds good. While small homes are cozy sometimes they can also feel cramped and uncomfortable. I'd recommend high ceilings.

Though I'd also like to take this opportunity to remind you and my other followers that any space three blocks tall and above always poses a risk of endermen teleporting into your house to escape various hazards such as rain, so just keep that in mind. Make sure you build a two-high area you can hide in if you accidentally make eye contact. It doesn't have to be big, maybe just a closet, but it works in a pinch.

Most building code doesn't require enderman-proofing in three-high spaces inside buildings, since creating a building like that is almost completely impossible. Crafting tables? Teleportable. Carpet? Teleportable. Glass? Teleportable. The upside to this is that endermen are fairly noisy and unsubtle creatures, it's not hard to notice them. As I said before, though, as long as you can hide in a two-high room, you'll be fine.

The blocks in that enderman can pick up are restricted in many cases regarding exterior walls (sorry dirt hut purists) to prevent endermen from creating unsafe holes into your home.

There's one vital rule regarding enderman proofing, and that is about TNT storage. Endermen can pick up TNT blocks, which is not bad on its own unless there's redstone signals within the vicinity, which unfortunately qualifies as anything from bells ringing to doors opening and closing.

Though TNT should normally be stored in item form, any more than five placed TNT blocks should be stored in a room with a two-high ceiling.

I've gotten off topic. What was I talking about again?