Marcus/Oliver definitely would work for me! ♥ Also ahahah, I just thought of Mulciber as (if I remember right) he and Avery enjoyed being nasty towards muggleborns together, so there could some sort twisted friendship evolution line, with a smidgen of DEness hidden within that. And for a line with Bastan, I'd expect there to be a side of some (vigorous) denial involved, because of the way I've written him. What DEs do you play, though?
Pps. I wanted to say this earlier, but REGINA ♥. Your Genius Next Door lyrics brought me oodles of joyousness.