Aveline: perfectly at home in C-Sec, dealing with the refugees. Like she does. I imagine she and Bailey would butt heads as often as agree, but secretly he loves her to bits.
Anders: unstable L2 rebel biotic, wanted by just about everyone and stirring up shit just about everywhere.
Merrill: quarian on her pilgrimage, going goggle-eyed over EVERYTHING. Don’t let her loose in the Citadel without a tour guide. And possibly a leash.
Varric: notorious volus storyteller/writer/overall media personality. You know it.
Humor me; add your own. :)