Cornelia Goth (with Hecuba and Menelaus), Ginia Kat, and Tara Kat (Ginia is just an aged up Tara, who's face template does not change at all into the elder stage. Cornelia's doesn't either! I guess whatever Dina's peddling must be working!)
As was pointed out earlier, Mary Sue Oldie (spikey hair) and the Tricou kidlets.
Goopy Gilscarbo (of course) and Peter Ottomas.
I can't believe nobody has pointed out who the matchmaker is yet! Maybe you're just not used to seeing her pull such devious facial expressions? (Well, probably more because I didn't include any closeups of her) Hint: I imagine her to be a mischievous ageless fairy who likes to mess with people's heads.
I can't believe I did three "social gathering" chapters in a row. Thankfully the next one won't have me swamped with so many characters!