The necromancer and the controller are good concepts but I would think that they are the lone wolf type characters and that is ok for a table top setting but it doesn't translate that well into a pbp game.
I think the paragon would be best but it is your choice really. Same setup as Agamon dictated for pl.
On a side note, and this is to everyone, I do have some broad ideas on where I want this to go but I have always believed that its the players themselves that direct where the game goes and that the GM just fits the setting around them.
With that in mind be once Victim has a rough write up of his character, I will start a new chapter.