Oh man, Karkat you poor non-linguist. You decided that "sister" was the human word for moirail, didn't you. And John as much as told you Rose is his moirail, right after an intensely pale moment with Jane . . . and now you think John is a paleslut. (To be fair, John is a paleslut). But someone is going to have to sit down an explain how human relationships work, and soon.

Also, yes, humans are mammals.

Now, to the author: the three castes are troll, drone, and mother grub? Because I am having trouble thinking of what else it might be. Also, is there more than one mother grub?

Also also, troll biology what.