You don’t need to describe your character down to the finest detail; let your reader do some imagining of their own (they seem to enjoy that!) But there are a few character points that affect how they interact with their world which you can reveal through action.
Fan:If you could spend a day with your character, where would you take them and what would you do?
Jared:I’ll let you start.
Jensen:I would probably take him to a really cool beer bar and sit down and order a nice pie and say “dude, tell me some of your stories.” because Dean has definitely lived a much more different life than Jensen has lived. So, that’s what I would say. [to Jared] HAH! Beat that!
Jared:I would take Sam to that very same beer bar and throw peanuts at Jensen and Dean.