Bellatrix Black
Bellatrix arrives wearing a classic and simple dark green wrap dress. She is quick to take an snack or two when the trays come her way and spends most of her time wandering around, taking note of who is there and who is not.
She's also taken to poking around the castle to see where she can and cannot go. She is in a relatively good mood and is generally approachable today.
Where she sits during the feast doesn't much matter to her. She'll likely chose to sit with Evan, Walden or perhaps Snape since at least then she'll have someone to talk to. Aside from that she is likely too seek out Harry when she sees him, if he arrives. She'd like to annoy him a little if the chance to do so presents itself. And she will make a point of speaking to each of the founders to thank them for the feast.
If you want to interact with her, just place Tag Bellatrix in your subject line and where you are. I will have her pop in there when I see it.