ooh!! I'm really interested in Delphi! Lusus? Personality? Hive location?
Ah Delphi. She's an interesting one to say the least. She lives in one of the various communal hivestems (sort of like Sollux's Hive) though probably not the same one. I'm thinking that other trolls would have had similar thoughts. And its really the best place for her to be considering her prior personality.
Note that I said prior personality so allow me to explain. She used to be quite an intelligent and well spoken troll. In fact she used to research and read things with her Matesprit on various topics you could say that they were into the philosophers in a way. However, she was also entangled in a horrible blackrom triangle which lead to her being disposed off by one of the members. Well tried to at least... She managed to survive however was given some severe damage to her thinkpan in the process. She is still intelligent but her speech is jumbled making it appear as though she has gone mad. She has moment of lucidity and then also has moments were she'll get caught up within her mind remembering things and will violently act out and it will be a long time before she calms down. Her accident has left her fairly unable to take care of herself.
Which leads me to her Lusus. Her Lusus was a Cockatrice. One she used to be able to feed and keep subdued from eating other trolls or their lusii. However, nowadays it merely wanders around the stems and feeds itself.