Odyssea

Not much is known about the planet Odyssea/Odyssia. It is similar to Alternia in a few ways but is notably much more peaceful and caring than the Homestuck planet. We know it has two moons, we first see Cypria outside of Lexane's window and later we see it with Illia when Aliece steps outside on Page 99

Aliece mentions on Page 4 that there is in fact an Empress, and she is specifically different from Troll Marina, one of the few adult trolls we know of (the others being troll Florence, troll Twigs, and troll Lana, who only appear in one of Aliece's Tumblr posts)

We know the Empress is benevolent, largely from the fact that hemoism is much less prevalent than Alternia and that Aliece is able to be frank about being a mutant and not be culled. Aliece also mentions not having any issue with the Empress, but simply preferring Marina.

Hemoist ideologies still exist evidently, as Sepiey refers to Sianna as a Lowblood, but it would seem that these beliefs are outdated, as very few characters care remarkably about it that we've seen so far, though this could just be because the only highblood we've been introduced to properly so far is Kegien, who seems to not really know anything/care about the hemospectrum considering his best friend is a Rustblood and he previously was friends with a Mutant.