They are located in the center of Derse and Prospit‘s moons.  Except for Aradia’s which was in the center of Derse itself, but that was a rare exception.

I’ve considered it, but there isn’t really anyone I trust enough to give the password of this blog to.

He’s a monster that’s the head of the Alternian court system.  And that wasn’t oil, it was blood.  His Honorable Tyranny has black blood.

You don’t need a dreamself to use a Sacrificial Slab.

Yeah, Vriska did that right before Aradia was killed.

We aren’t exactly sure.  All we know is he overexerted himself protected the pre-scratch trolls which caused him to lose his psionics and his coherency.

One, the ring only changes the bearer with aspects of things prototyped pre-entry.  The Alpha kids didn’t prototpye anything pre-entry so the bearer of the ring wouldn’t change form.

Two, she gave the ring to the Draconian Dignitary so she doesn’t even have it.

And thirdly, the ring only affects carapacians so even if she did have it and it did have some changing juices nothing would happen.

Jane actually entered twice.

The first time she entered normally while playing

The second time she entered with Jake and the other Alpha kids.

No, there was one Alpha timeline that got rewritten.

Tavros is allergic to cats
Source