>>6170215Pic related is a rough estimate of what I imagine Rue'Vahn to look like, still wearing his Undivided armor despite having become a devoted Slannesh follower. I don't actually care too much about what weapon he uses.
Here's the source material I loosely based Sunset off of. The only difference is that Rue'Vahn takes extra effort to clean and pamper her, although nobody would be able to tell just by looking from a distance; a person would have to get very close to examine her fur and whatnot.
https://www.youtube.com/watch?v=OPnq7_l5Oh0 