i wont reply to comments about if its do-able until ive heard from everyone
well so far i got 1 interested, 1 its complicated

but for questions
-side chars that are important like azazel and serafall can exist, but they can also just exist by name and be different figures by appearance and or personality
I guess that much can depend on those that have joined and get to such a char first
though it also can depend co'gms setting up a char beforehand due to plot reasons, but yeah it depends on who makes such a plot as well
-I do plan to use Zeke and all other DxD chars i have made though split between groups due to the 2 char per group per player rule
moena and zeke in the valefor group