To readers? Richard and Maurice. To me personally as the author? Just Maurice. I have a very vague idea of where he came from and what made him the way he is, and I kinda like keeping it a bit vague, because it makes him a bit mysterious for me too. I think that’s why I like writing him (even though I’d very much would like to throw him against a wall).
Which minor character would you like to explore more about that isn’t going to be explored in INI?