Hey! I like this character idea (I’m a sucker for ancient immortals). Backstory stuff: I’m curious what’s brought Rue to Void city? Is she here because it’s a new place she’s never been to or did something draw here here? You said she has been traveling the world for a very long time, does she live in the moment, not planning out the future, or does she have a greater plan for herself? Multiple millennia is a long time to go without considering this, unless she actively chooses not to. What big events in history has she been a part of and in what way?
In regards to her powers: does she both takes people’s nightmares away and create new ones through magic? If so does that mean she could help someone sleep better or torture someone with night terrors? You mentioned age can augment a persons mind through artificial dreams, this actually effects there memories or does it plant idea seeds that can grow into new ideas that the victim believes they came up with by themselves? A lot of really fun stuff can be done with this power, I am super stoked to see what you do with it
About the design sheet: I thinks it’s pretty good, you got some facial expressions an a closeup of her magic Item. I would love to see what her rituals look like but I guess that can be shown in the intro comic/ battles.
I hope my babbling and list of questions are useful and I’m excited for Rue to join the roster of awesome Void characters. I’m already brainstorming battle ideas lol