Hee-hee, those nuns are great!

Maybe I should've given him a tail...
Is the baby hellboy one of the click-base minis?
They are indeed Hirst blocks, from the gothic dungeon builder mould (#45) I've found that you can make a lot of things with just that one mould, but since then I've added basic block, fieldstone, flagstone floor and dragon inn moulds to my collection. (And a few of the Linka stone moulds, too).
I'll post some pics soon of my Hour of Glory 3D layout before I paint it, for anyone interested.