After my experience in setting up a group photo of my CoH characters, I've been wondering if there's a way to assign a particular pose to spawned NPCs, so that they don't keep changing poses. It'd be nice if I could be assured that they'll all be looking at the camera, and not be moving, when I take the picture.
http://paragonwiki.com/wiki/Emotes
Any of the emotes listed here, if they describe a "stance" or describe a motion and then say "hold stance" (or similar verbiage) then it is a static pose that will be held indefinitely.
See also: Going Rogue: Complete Collection or Item Pack hero/villain stances (my favorite is stancevillain2!), or Akimbo (in Normal Emotes).
You should be able to use the Move / Emote popmenu (http://www.cohtitan.com/forum/index.php/topic,8913.0.html) to help with that, too.