Here is a table with some Monster Miens, inspired by the lovely Troika! Method of attaching a tiny table to the denizens of adventures in order to give them a little personality. While I adore the ones that are bespoke for each individual creature, I figured it might be useful to have something like this in a slightly more generic form.
It uses the d12, because that die seems unloved and rather lonely. It is ostensibly arranged to work alongside the standard 2d6 Reaction Roll if you wish (although those results will be weighed accordingly). Still mulling over a more extensive “d36” one that directly interfaces directly with some of the dice metadata for that lovely table.